Answer: Option (a) is the correct answer.
Explanation:
Chemical properties are defined as the properties that show chemical nature of a substance or compound.
For example, toxicity, reactivity, combustion etc are all chemical properties.
Properties in which there is no change in chemical nature of a substance is known as physical property.
For example, solubility, density, volume, mass etc are all physical properties.
When a substance becomes corrosive in nature then it means oxidation of substance has occurred.
When concentration of hydrogen ions increases then it means acidity of a substance increases.
When an acid comes in contact with a metal then it releases hydrogen atoms.
For example, [tex]2HCl + Mg \rightarrow MgCl_{2} + H_{2}[/tex]
When we add an acid to a base then it will result in the formation of salt and water.
For example, [tex]HCl + NaOH \rightarrow NaCl + H_{2}O[/tex]
An acid does not feel slippery but a base feels slippery on touch.
Thus, we can conclude that chemical properties of an acid include corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and forms salt and water when added to a base.
A particular star is white. Another star that is much hotter is expected to be ______.
red
yellow
orange
blue
Blue would be my final answer
during sublimation particles in a solid room deodorizer move directly into the air as a gas how does the movement of the deodorizer particles change? the particles ___.
A) move fast enough that the attraction between particles is overcome completely
B) Lose enough energy that the movement completely stops
C) Move slowly enough that strong attractions form, pulling the particles together
D) Are only able to slip and slide past each other
Answer: Option (A) is the correct answer.
Explanation:
Sublimation is a process in which molecules of a solid substance are converted directly into gaseous phase without undergoing liquid phase.
This is because solid particles absorb the heat from their surroundings due to which bond between the molecules are broken down. As a result, molecules gain kinetic energy and they move rapidly into the atmosphere.
Thus, we can conclude that in the given situation the particles move fast enough that the attraction between particles is overcome completely.
Which of the following is the best evidence that work has been done on or by an object?
The change in the energy of an object is the best evidence that work has been done on or by an object. Thus, the correct option is A.
What is Work done?
Work is done on an object or by an object whenever a force is applied on the object that moves it over a certain distance or change the energy of the object. This movement is a result of energy change.
We can calculate the energy transferred to an object, or the work done, by simply using the formula where we multiply the force by the distance moved in the direction of the force applied.
Therefore, Energy transferred = work done = force × distance moved in the direction of the force.
W = f × d
Therefore, the correct option is A.
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the small wobble in the orbit of Neptune helped astronomers discover Pluto. this suggests that this wobble was MOST LIKELY caused by A) fusion B) gravity C) friction D) magnetic attraction
The small wobble in the orbit of Neptune helped astronomers discover Pluto. This suggests that this wobble was MOST LIKELY caused by
A) fusion. x
B) gravity. correct
C) friction. x
D) magnetic attraction. x
From the usa testprep website
Which stars have the lowest absolute brightness?
Supergiants
Giants
Yellow stars
Dwarfs
Answer:
DWARFS
Explanation:
Answer:
Dwarfs
Explanation:
I got it right on my test :)
Hope this helped!~
xox
A spaceship orbiting earth flies to the moon. How is the gravitational force pulling on the spaceship related to the distance that the spaceship is from the earth? As the distance from the earth decreases, the gravitational pull on the spaceship would decrease. The gravitational pull of the earth is constant and therefore the gravitational pull on would not change. There is no gravity on the moon and therefore only the earth will exert gravitational force on the spaceship. As the distance from the earth increases, the gravitational pull on the spaceship would decrease.
In this lab, you will use a magnet and a simple circuit to examine the concepts of electricity and magnetism. Think about how these ideas can be shown experimentally. In the space below, write a scientific question to address by doing this experiment.
Sample Response: How can magnetic and electric fields be demonstrated?
Electromagnetism is defined as the branch of physics, in which interaction between electric and magnetic fields is studied.
In the presence of a magnetic field, the electrons move and produce an electric current. The experiment in which electromagnetism can be shown in the making of an electromagnet.
The electromagnet is a type of magnet, in which a magnetic field is generated due to the presence of electric current.
The experiment in which magnet and simple circuit can examine the concepts of electricity and magnets is making of an electromagnet.
To perform the experiment, the things required are:
copper wire, battery, iron nail, and other small magnetic things.
Steps for conducting the experiments include:
The copper wire should be wrapped around the iron nail. The one end of the wire should be loose. The wire should form the coil-like structure on the nail. The plastic coating of the wire from the loose ends should be removed. The uncoated wires should be attached to the different terminals of the battery. Now, the iron nail should be placed near the small magnetic objects. Thus, the magnetic objects will be attracted to the iron nail, explaining the phenomenon of the electromagnetism. In the presence of electric fields, the iron nail can be treated as an electromagnet.Question:
How does the electric field propagate through the magnetic field?
Therefore, electromagnets are the classic demonstration of electric and magnetic fields working together.
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The part of the element that defines it is the element's number of ____.
Please answer quickly!
A car has a mass of 1000 kg and is moving with a velocity of 10 meters/second. What is the momentum of the car?
Which is an action that can cause an object to move or change its state of motion
FORCE is the answer
:P
In the food web shown above, which of the following organisms can be classified as a tertiary consumer?
A.
puffin
B.
jellyfish
C.
krill
D.
eiders
link:https://app106.studyisland.com/pics/200922foodweb.jpg
Which of the following explains how heat flow within Earth changes its surface?
Molten material moves in one direction, moving the plates in the opposite direction
Molten material moves in one direction, moving the plates in the same direction
Cyclical movement of molten material moves plates in different directions
Cyclical movement of molten material moves all plates in one direction
Answer:
C
Explanation:
just trust me
According to the Academic Honesty Policy, plagiarism is ______.
Which magnetic property best describes a magnet’s ability to act at a distance?
The waves that have shorter wavelengths than visible light are: (check all that apply)
Radio Stations
Ultraviolet Waves
Gamma Rays
Microwaves
The waves that have shorter wavelengths than visible light are gamma rays and UV rays. Microwaves and radio waves are longer waves than visible light.
What is electromagnetic spectrum ?The electromagnetic spectrum is the arrangement of waves in the order increasing frequency or decreasing wavelength. The order of the spectra starts from radio waves, microwaves, infrared, visible light, ultraviolet, x -rays and gamma rays.
The visible light that we can see is in between IR and UV rays. Hence, visible light has a frequency greater than IR rays but shorter than IR. Similarly visible light is longer than UV- rays but less frequency than UV rays.
Gamma rays are the most energetic and shorter waves in the electromagnetic spectrum with smaller wavelength and greater frequency. Hence, options b and c are correct.
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I need help fast. what is the definition of Kinetic molecular model
which statement accurately describes what happens when ice melts in terms of energy
An embryo created by male-female reproduction has traits from _____.
A.the male only
B.the female only
C.both the male and the female
Please help I will mark as most brainliest
In a pulley setup that has a moving pulley, __________.
A.) you have to pull the string a greater distance, but the force needed to lift the mass is cut in half
B.)you have to pull the string a greater distance, and it takes more work to lift the mass
C.) you don't have to pull very much to lift the mass
D.)your work doubles because the pulley moves
Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from air through a diamond.
With the density given, the thing that'll happen to the light ray is that the diamond would act like a prism, or the light would break up and disappear.
What is density?Density simply means the degree of compactness of a substance. It's the degree of consistency meaured.
Diamonds are a very dense material. The thing that would happen to the light ray if you projected it from air through a diamond is that the light will disappear.
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Which of the following describes how the Mid-Atlantic Ridge formed on Earth at a divergent plate boundary?
Plates moved in closer
Plates slid past each other
Plates moved with each other in the same direction
Plates moved apart
A ski lift carries people along a 220-meter cable up the side of a mountain. Riders are lifted a total of 110 meters in elevation. What is the idea mechanical advantage of the ski lift?
The Ideal Mechanical Advantage (IMA) of the ski lift is 2. It is calculated by dividing the total length of the lift cable by the total change in elevation.
Explanation:The question is asking about the Ideal Mechanical Advantage (IMA) of a ski lift. The IMA is determined by the ratio of the distance over which the input force is applied to the distance over which the output force is applied.
In the case of a ski lift, the input force is applied over the entire length of the cable, while the output force is applied over the change in elevation. Therefore, the IMA of the ski lift would be the total length of the cable (220 meters) divided by the total change in elevation (110 meters), giving an IMA of 2.
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The formula for calculating work is ___.
force divided by distance
force multiplied by distance
power divided by time
distance multiplied by time
The formula for calculating work is force multiplied by distance; that is the second option, as work is a measure of the energy transferred to or from an object and is calculated by multiplying the force with distance.
What is the work done by an object?Work is a physical concept that describes the energy transferred when a force is applied to an object and is caused to move a certain distance and work is said to be done which can be positive, negative, or zero, depending on the direction and magnitude of the force. The formula expresses the fact that the amount of work done on an object depends on both the magnitude of the force applied and the distance, and is written as W = F x d.
Hence, the formula for calculating work is force multiplied by distance; that is the second option.
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a bat experts a 120 N force on a 0.134 kg baseball for 0.04 seconds. what impolse is excerted on the bat
why does biodiversity contribute to a habitats sustainability
In the alpha decay of Francium-221, what daughter element is produced? (You may need to refer to the periodic table in the lesson.)
217 AT
85 (i don't have enough characters so ignore this part)
The metric unit of measurement for force is the _____.
pound
Newton
foot-pound
Newton-meter
What is an atom? what are electrons,protons,and neutrons?
The power of imagination helps a scientist to propose valid scientific explanations about the solar system use biased methods to answer questions about the solar system pose questions about the solar system which are not reasonable create theories about the solar system which are not acceptable
The power of imagination is integral to proposing scientific theories, particularly in the study of the solar system; however, these theories must be tested against experimental data to be accepted. Kepler's imaginative approach led to the formulation of laws that underpin our understanding of planetary motion, highlighting the scientific method's reliance on creativity tempered by empirical validation.
The power of imagination plays a crucial role in the scientific method, especially when it comes to understanding the solar system. Scientists use their creativity to construct theoretical models of how the universe could function and then perform experiments to see which models hold. For example, the work of Johann Kepler, who proposed the laws of planetary motion, showcases how imaginative concepts can lead to significant scientific advancements. While Kepler's models were initially based on mystical ideas, they eventually contributed to our modern understanding of celestial dynamics. Thus, the imaginative component of science allows for the proposal of new and sometimes revolutionary theories, but ultimately, it's through experimentation and data that these theories are validated or refuted.
Science thrives on new ideas and is always ready to assess the validity of different models and theories through careful experimentation. As new data come to light, scientists continuously refine their theories to reflect the most accurate understanding of the natural world. This process illustrates the dynamic and adaptive nature of scientific inquiry, which values empirical evidence overall.
a plane takes off at 34 m/s if it accelerates from rest and takes 7.2 seconds to lift off find the acceleration