Answer: The material that is not a mixture; it has the same properties all the way through is called a substance.
Explanation:
A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Hence, it cannot be separated by physical means. Example: Gold
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. They can be separated by physical means as well. Example: Air
Thus the material that is not a mixture; it has the same properties all the way through is called a substance.
Answer:
The velocity with which the mass will hit the floor is 
Explanation:
If the tension in the string is 
, for 
we have
,
and for the mass 
From these equations we solve for 
and get:
The kinematic equation
gives the final velocity 
of a particle, when its initial velocity was 
, and has traveled a distance 
while undergoing acceleration .
In our case
(the initial velocity of the particles is zero)
which gives us
which is the velocity with which the mass will hit the floor.
He noticed that the outlines of the continents looked like they could fit together similar to puzzle pieces
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B. Purchase a small plastic container and mark 1-ounce increments on the outside to determine volume. Pour 5 ounces of water into the container, and place in the freezer for 8 hours. Compare the frozen or ending volume with the liquid or beginning volume.
<h3>How much water expands when frozen?</h3>
Ice is less denser than the liquid form. Water is the only known non-metallic substance that expands when it freezes because it is the unique property of water. Water density decreases and it expands approximately about 9% by volume. For calculating the expansion of water, plastic container is the best option. We know that water expands when the water freezes because it is a unique property of water which allows the survival of aquatic organisms.
So we can conclude that option B is the right answer.
Learn more about water here: brainly.com/question/1313076
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