It only affects the form of the chemical substance but not the chemical composition.
Hope that helps :)
Final answer:
During a physical change, the chemical composition, mass, number of atoms, and number of molecules of a substance remain unchanged. Key properties, such as color and boiling point, typically do not alter in a physical change because no chemical bonds are broken or formed.
Explanation:
During a physical change, certain properties of substances are consistent and do not change. These include the chemical composition of the substance, as well as the mass, the number of atoms, and the number of molecules involved. Physical properties that do not alter during a physical change can include color, boiling point, and state of matter, as no bonds are broken or formed during the process. Examples of physical changes include melting, freezing, and tearing.
A key concept to understand is the conservation of mass, which states that in a closed system, the mass of the substances will remain constant, regardless of the physical changes they undergo. Matter can change its form—such as ice melting into water—but it cannot be created or destroyed. This principle is a cornerstone of physical science and supports the idea that during physical changes, certain properties remain unchanged.
what is meant by scouring
Scouring is the process where by rubbing very hardly, to clean a dirt, specially to make a clean or bright . To carry away the dirt as by current or water , often with off and on away. Especially for the purpose of cleaning; to clean by friction.
example: To scour pots and pans and to scour grease from pots and pans.
Explanation: what does the potins give your or what do you earn??
Jane was in an interview that lasted approximately 20 minutes. It was very cool in the room. As she walked out of the room, she noticed droplets of water formed on her spectacles. What is this transition of water from a vaporous state to a liquid state called?
The transition of water from a vaporous state to a liquid state is known as condensation.
One can observe droplets on the outer surface of the spectacles when he or she moves from a colder region to a warmer region. It is due to the magnitude of the low temperature of the glass, that is, its surrounding becomes cooler than it was before.
Due to this, the water in the form of water vapor in the air around the outer surface of the glass condensates and settles down and thus converts into the form of a liquid, that is, droplets.
Answer:
D. Condensation
Explanation:
Have a good day!
Choose the FALSE statement about rocks. A. They are natural substances. B. They must form from solid materials. C. They can form above or below ground. D. They are made of one or more minerals.
The answer would be B.
Explanation:
-A is true because they are formed naturally by earth.
-B is incorrect because rocks don't form from solids, the form from sand being compressed for years It's not just solids that make rocks, It's much more. It's water, rocks, compression, etc.
-C is true because, certain rocks form above ground and rocks that are made from lava are above ground.
-D is true because, rocks are made from sand, soil, etc. It's a long process but rocks are made from various minerals.
The false statement about rocks is B. Rocks do not have to form from solid materials as they can form from a variety of materials including minerals, organic matter, and even through solidification of non-solid materials such as magma or lava.
Explanation:The FALSE statement about rocks is B. Rocks do not necessarily have to form from solid materials. In fact, they can form from a variety of materials, including minerals and organic matter, and can also form through the solidification of molten material, like magma or lava, which are not initially solid. Such rocks are known as igneous rocks. A, C and D are all true statements. Rocks are natural substances (A), can form above or below ground (C), and are made up of one or more minerals (D).
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compared to farms of 100 years ago modern agribusinesses need
fewer workers.
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what 2 things are produced by neutralization
neutralisation is the process of converting an acid or a base into the pH value 7.The 2 things produced r hydrogen gas and a salt.
acid+base=salt+hydrogen gas.This often occured in your stomach. when you have gastroble you are eating tablets which are base and a reation take place with hydrocloric acid in it
hope it helps
The sun is 150 kilometers from earth. If you wanted to explain to a friend how far that is, what would you say
Well, this is a trick question. If I am thinking logically, that is a pretty far distance away. Explaining it to a friend, however, means that you would say that then sun is 93.2 miles away from Earth and 492,126 feet away as well. Either way, it is a long distance.
The distance between the Earth and the Sun is approximately 150 million kilometers. To help your friend understand this distance, you can use the example that if the Sun was reduced to the size of a basketball, the Earth would be a small apple seed about 30 meters away from it.
Explanation:
The distance between the Earth and the Sun is approximately 150 million kilometers. To help your friend understand this distance, you can use the example that if the Sun was reduced to the size of a basketball, the Earth would be a small apple seed about 30 meters away from it.
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the Earth the air temperature changes lower above the ocean because the oceans water molecules blank and blank heat more slowly than land. why does the air temperature change faster online than ocean
Water has a higher heat capacity than air. It takes more energy to cause a temperature change in water than it would in air. Basically, air is prone to heating and cooling quicker than water due to a lower heat capacity.
Air temperature changes faster on land than over the ocean due to the ocean's higher heat capacity and its processes of evaporative cooling and vertical circulation, which help in stabilizing temperatures.
The air temperature changes more quickly on land than over the ocean because the oceans water molecules absorb and release heat more slowly than land. This phenomenon is due to the high heat capacity of water, meaning it requires more energy to change its temperature compared to land. Additionally, evaporative cooling is more prevalent over the ocean, as there is an unlimited water source, compared to land where water is not as abundant. The ocean also distributes heat through vertical circulation currents, mixing surface water with deeper, cooler water, which helps to stabilize the temperature. Moreover, the land's lower heat capacity means it can heat up and cool down more quickly when the same amount of energy is added or removed.
What is the maximum number of degrees of longitude possible
The maximum number of degrees of longitude possible is 180.
What is longitude?Longitude is a valuable metric used to determine the east or west positioning of a specific place in relation to the Prime Meridian. This significant line, running through Greenwich England serves as an imaginary reference point.
Measured in degrees longitude can span from 0 degrees at the Prime Meridian to an incredible 180 degrees east or west.
Additionally we have the International Date Line, another line of longitude that designates the division between two consecutive calendar days. Specifically located at 180 degrees east of the Prime Meridian it plays a crucial role in timekeeping and global coordination.
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The maximum number of degrees of longitude is 180, which corresponds to the International Date Line, located opposite the Prime Meridian which is defined as 0 degrees longitude.
Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It ranges from 0 degrees at the Prime Meridian, which is located at the Royal Observatory in Greenwich, England, to 180 degrees east or west. The maximum degree of longitude, 180°, is represented by the International Date Line, which is on the direct opposite side of the Earth from the Prime Meridian.
Because Earth is spherical, longitude degrees are measured like a circle, totaling 360 degrees. However, this value is split into two equal halves of 180 degrees each, going east and west of the Prime Meridian. The International Date Line is a concept that allows for consistent timekeeping across the globe despite the continuous rotation of the Earth.
Ana is six weeks pregnant, and her baby is officially in the embryo stage. What does the baby now have?
The baby has a heart beat.
Hope this helps!:)
Grass, trees, and cacti all reproduce by
They all reproduce by spreading seeds, cacti spreads its seeds in the thorns, trees spread seeds by acorns and other things that is just my example. Grass spread thier seeds by the seeds inside of the strand of grass. when the grass gets mowed and blown away or when it dies or also when people re plant they get rid of the dead grass and put in some healthy growing seed.
I hope this helps.
And if this is correct do mind marking me as brainliest.
Grass, trees, and cacti all reproduce by both sexual and asexual reproduction methods. Some grasses and trees produce seeds through the process of sexual reproduction, involving the fusion of male and female gametes. Cacti can also reproduce sexually by producing flowers and seeds, but all three can engage in asexual reproduction methods like vegetative propagation, where new plants grow from parts of the parent plant.
In sexual reproduction, the genetic material from two parents combines to create offspring with genetic variation. This is important for the adaptability and survival of a species. Pollination in plants like grasses and trees is a common way sexual reproduction occurs. On the other hand, asexual reproduction involves a single organism reproducing without the genetic input from another organism, leading to offspring that are genetic clones of the parent. Examples of asexual reproduction include the growth of runners in grasses, cuttings taken from trees, or offsets from cacti. While sexual reproduction allows for genetic diversity, asexual reproduction is often quicker and can be advantageous in stable environments where adaptation to new conditions is not necessary.
If the contour lines are close together, the slope of the hillside is _____. A. steep B. shallow C. constant
C, the hillside has a constant value.
of the three lipid types, phospholipids are more similar to fats. TrueFalse
This is false. Triglycerides are lipids you obtain from fat, and are more commonly referred to when talking about fatty build up like cholesterol. Phospholipids are derivatives of triglycerides and are more for insulation of cells.
While visiting Wave Rock in Australia, you observe streaks of minerals present on the landform. What natural process most likely caused the streaking?
Erosion
Deposition
Oxidation
Weathering
Answer:
THE ANSWER IS DEPOSITION
Explanation:
it is deposition because the original rock was broken down and formed into minerals on the wave rock aka the streaks since it was once under the oceon.
Deposition is most likely caused by streaking.
What do you mean by deposition?Deposition is the laying down of sediment carried by wind, flowing water, the sea or ice. Sediment can be transported as pebbles, sand and mud, or as salts dissolved in water. Salts may later be deposited by organic activity (e.g. as sea shells) or by evaporation.
Moreover, deposition is the processes where material being transported by a river is deposited. Deposition occurs when a river loses energy.
Sediment deposition can be found anywhere in a water system, from high mountain streams, to rivers, lakes, deltas and floodplains.
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the structure found in all cells that acts like a barrier of the cell controlling what enters and leaves the cell
cellular respiration is the process in which glucose is broken down into carbon dioxide and water, releasing cellular energy in the form of ATP to be used for life processes. In which of the following organelles is the energy created?
A. Golgi Vesicles
B. Mitochondria
C. Lysosmes
B. Mitochondria
The mitochondria is where ATP is made, hence why it is often called the "powerhouse" of the cell.
Using the periodic table entry below, how many neutrons does the most common isotope of hydrogen have? 1 2 0 cannot be determined
The answer is; 0
The most common hydrogen atom has one (1) proton and one (electron) but no neutron. This hydrogen isotope is referred to as hydrogen-1 or Protium. This hydrogen composes 99.985% of naturally occurring hydrogen atoms. The other atom, Deuterium, has a neutron in its nucleus. The other isotope is Tritium that has two (2) neutrons in its nucleus.
Answer:
The correct answer is 0
Explanation:
which organisms transform nitrogen into a form that is useful to plants
What is the basic building block of life
I'm pretty sure it's Cells
Cells are the basic building block of life.
Earth is made up of four main spheres. The geosphere refers to the rocks, minerals, and natural landforms that make up Earths surface. What do you think makes up the hydrosphere? Why is the hydrosphere important to life on earth?
For Plato Users
The word hydro refers to water. The hydrosphere consists of all rivers, lakes, oceans, glaciers, and groundwater found on Earth. The hydrosphere is important because water is a basic necessity for living things. Also, aquatic life forms rely on bodies of water for their habitat.
All water bodies make up the hydrosphere. Hydrosphere is important to life on earth because it provides aquatic habitat to various plants and animals and water plays an essential role in our daily life.
What is hydrosphere?A hydrosphere is a term used to describe the complete amount of water on a planet. A planet's hydrosphere is often liquid, vapour, or ice. Liquid water exists on the layer within the variety of oceans, lakes, and rivers. What is habitat?"Habitat is a term employed in ecology to explain the gathering of resources, physical and biological characteristics that exist in a very given location to assist a species' survival and reproduction." The five primary habitats include forests, grasslands, deserts, mountains and polar areas, and aquatic habitats. What are aquatic habitats?"An aquatic habitat is one that contains water." It includes both areas that are permanently submerged in water and areas that aren't from time to time.Hence, hydrosphere is made up of water bodies and it provides aquatic habitats to various organisms.
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True or false if there were no gravity planets would collide with one another
k on “Chromosomes and Inheritance”
1. Take the tour titled “What is a Chromosome?” Draw a picture that demonstrates how DNA is coiled into chromosomes:
Once you have your drawing, label the following: Chromatin, Histones, Chromatids, Chromosome, kinetochore
Chromatin is a complex of DNA and proteins found in eukaryotic cells, with the function to pack DNA in more compact shape and to prevent DNA damage. One of the main components of chromatin are proteins called histones. Histones are directly responsible for DNA package to form structures called nucleosomes. Chromatin can be found in its active form-euchromatin (tuned on genes) and inactive-heterochromatin (turned off genes).
Chromosomes are organized structures of DNA which are visible in certain stages of cell cycle (such as metaphase when they are aligned). Every chromosome is copied once during the S phase of the cell cycle. It is then found in an X-shaped structure (centromere is located in the middle of the chromosome and two-arm structures are the original chromosome and the copy -sister chromatids).
John is testing the effect of temperature on the solubility of sugar in water. He plans to determine the mass of sugar dissolved in a saturated solution. He will begin with a known mass of sugar and add sugar to water until the solution is saturated. He will then calculate how much sugar dissolved by subtracting the remaining mass from the initial mass.
John is conducting an experiment to determine the effect of temperature on the solubility of sugar in water. The experiment involves adding sugar to water until it is saturated and then calculating the mass of sugar dissolved. Solubility is the ability of a substance to dissolve in a solvent, and temperature can affect the solubility of a substance.
Explanation:John is conducting an experiment to determine the effect of temperature on the solubility of sugar in water. He plans to add sugar to water until it is saturated, and then calculate the mass of sugar dissolved by subtracting the remaining mass from the initial mass. This experiment is related to the solubility of sugar in water.
Solubility is the ability of a substance to dissolve in a solvent to form a homogeneous mixture. In this case, sugar is the solute and water is the solvent. When sugar dissolves in water, its molecules become uniformly distributed among the water molecules.
The solubility of a substance, such as sugar, can be affected by various factors, including temperature. By testing the solubility of sugar at different temperatures, John can observe how temperature affects the amount of sugar that can be dissolved in water.
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John's experiment involves exploring the solubility of sugar, a solute, in water, a solvent. Creating a saturated solution, he investigates the temperature dependence of solubility. He calculates the mass of dissolved sugar to measure the effect of temperature on solubility.
Explanation:John's experiment involves exploring the concept of solubility, specifically the temperature dependence of solubility. In solutions, there are usually two components - a solvent, which is the component present in a higher concentration and solutes, that are present in relatively lesser concentrations. In this case, water acts as the solvent and sugar behaves as the solute.
The process he describes involves creating a saturated solution by adding sugar to water until no more sugar dissolves. This condition is achieved when the solution's sugar concentration is greater than the equilibrium solubility at that temperature, making the solution supersaturated.
Moreover, the solubility product represents the product of the solute's concentrations in a saturated solution raised to the power of their stoichiometric coefficients. Therefore, by knowing the initial mass of sugar and the remaining undissolved sugar, John can calculate the mass of the dissolved sugar, which allows him to measure the effect of temperature on the solubility of sugar in water.
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You have just discovered a new organism It is a single cell and has a cell wall but no nucleus what kind of organism is it Explain your answer
it is a prokaryotic cell
The human stomach is lined with glands that produce several chemicals that help in the process of digestion. One of these chemicals is hydrochloric acid, a powerful acid that makes the stomach very low in pH. Another substance is mucus--this substance lubricates and protects the stomach wall. A third substance is the enzyme pepsin which helps to break down protein molecules into smaller molecules called peptides.
If the chemical enzyme pepsin was mixed with some proteins in a test tube in a laboratory, which of these outcomes would you predict?
A) Pepsin would probably NOT break down proteins in the test tube because enzymes cannot exist outside of the human body.
B) Pepsin would partially break down the protein molecules but would not work well due to the absence of DNA in the test tube.
C) Pepsin would probably NOT break down proteins in the test tube because pepsin is designed to work at very acidic pH ranges.
D) Pepsin would break down the protein molecules equally well in the laboratory as in the human stomach since it is a stable chemical.
The right answer is C.
Pepsin (from Greek pepsis, meaning digestion, peptein = digest) is a digestive endoprotease of gastric juice.
Pepsin degrades food bolus proteins by hydrolysing peptide bonds before aromatic amino acids.
The optimum pH of action of pepsin is between 1.8 and 4.4.
It is mostly composed of aspartic acid and glutamic acid.
Answer:
C) Pepsin would probably NOT break down proteins in the test tube because pepsin is designed to work at very acidic pH ranges.
Explanation:
Pepsin is the main proteolytic enzyme active in gastric juice, an aqueous solution rich in hydrochloric acid and enzymes that act on protein digestion. Gastric juice leaves the stomach with very low pH levels, which means that the stomach becomes extremely acidic, an ideal environment for the work of enzymes that work on digestion, including pepsin. Pepsin is produced by the main stomach cells via zymogens and has the function of digesting proteins by catalyzing the hydrolysis of these molecules by breaking down the peptide bonds between some amino acids. The products of this breakdown are relatively long chains of amino acids, oligopeptides such as peptides and proteoses.
As stated earlier, pepsin works at very low pH conditions, ie in very acidic environment, so we can conclude that if pepsin were mixed with some proteins in a test tube, pepsin would probably not break down the proteins. in the test tube because pepsin is designed to work in very acidic pH ranges.
Why do our bodies need nitrogen?
Well, Nitrogen is an important part of our bodies, Amino adcids all contain nitrogen there like building blocks that make protiens in your hair, muscles, and other tissues, Nitrogen is also and important part of your DNA.
Please give brainliest.
the golgi apparatus: a. packages cell products b. eliminates waste c. stores dna d. makes energy
It packages proteins
The golgi apparatus package cells.
Correct option is (A) packages cells.
Golgi apparatus is the organelle found in most eukaryotic cells. Its main function is to modifying, sorting and packaging proteins for the purpose of secretion. It also helps in transportation of lipids across the cells.
Hence, option A is correct .
Assuming thr materials don't mix, show how the materials would "stack up" in a graduated cylinder. A.rubber, b. Corn oil. C ice. D wood and e. Air
The arrangement of the materials in the graduated cylinder from upper part to lower part has been: Air, corn oil, ice, rubber, wood.
The graduated cylinder has been the measuring cylinder with the volume marks that has been used for the measurement of the volume of solutions.
The samples have been stacked up based on the order of the density, as high density substance will sink in the cylinder, while low density substances are present above.
Stacking in Graduated cylinderThe air has been the lightest substance, and has the lowest density. Thus, it has been present in the top region of the graduated cylinder.
The further arrangement of the materials in the graduated cylinder from upper part to lower part has been:
Air, corn oil, ice, rubber, wood.
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n double-blind studies neither the test subject or the researcher knows who was given the drug and who was given the control. Why are these studies effective for testing a drug that may elevate mood and relieve feelings of depression?
When studying the effects of a drug that may elevate mood and relieve feelings of depression, it is important for these studies to be double-blind studies. In this type of studies, neither the test subject nor the researcher knows who was given the drug and who was given the control. The effect of this is that no one can be a victim of a placebo effect.
The placebo effect occurs when people respond to a drug or treatment in ways that cannot be attributed to the drug itself. Instead, this comes from the belief of the patient in the treatment.
Mary lives in a region that is close to the equator and is very sunny. She decides to harness solar energy for various purposes. Which of the following will help Mary?
Answer:
photovoltaic cells
Explanation:
Final answer:
Mary can use photovoltaic cells for electricity and passive solar heating for home heating thanks to her sunny regional location. Additional energy storage or grid connections provide energy when solar generation is down. Innovations in solar technology even allow for remote use.
Explanation:
Mary, living in a region close to the equator where it is very sunny, can harness solar energy for various purposes. To maximize efficiency, she can use photovoltaic cells (PV cells) for the direct conversion of solar energy to electricity, which is especially suitable considering they have become more efficient and affordable over time. Using technology that requires concentration of solar power, such as solar thermal systems with curved mirrors to heat up fluids and drive heat engines, can also be beneficial in sunny regions, although this approach is best suited for large, centralized facilities.
For heating, Mary might take advantage of passive solar heating through careful home architectural design, which includes south-facing windows that allow sunlight to heat the thermal mass inside the building, such as rocks or tiles, ultimately distributing warmth throughout the home. Moreover, adopting energy storage solutions or connecting to the grid will ensure electricity availability during the night or on cloudy days when solar generation is insufficient.
Lastly, Mary could explore the innovation of thin and mobile solar materials, which would enable energy collection in remote areas and underprivileged communities, illustrating the versatility and wide applicability of solar technologies in diverse settings.
Which form of energy increases when a spring is compressed? A. chemical potential energy B. elastic potential energy C. kinetic energy D. radiant energy E. thermal energy
Answer:
Elastic potential energy
Explanation:
The potential energy of a spring is given by :
[tex]U=\dfrac{1}{2}kx^2[/tex]..........(1)
Where
k = spring constant
x = compression or elongation in the spring
When the spring is compresses, elastic potential energy of the spring increase. From equation (1), it is clear that the elastic potential energy of spring is directly proportional to the compression or elongation in the spring.
Hence, the correct option is (b) "elastic potential energy".
Answer:
Answer:
Elastic potential energy
Explanation:
The potential energy of a spring is given by :
..........(1)
Where
k = spring constant
x = compression or elongation in the spring
When the spring is compresses, elastic potential energy of the spring increase. From equation (1), it is clear that the elastic potential energy of spring is directly proportional to the compression or elongation in the spring.
Hence, the correct option is (b) "elastic potential energy".
Explanation: