Explain what happens when energy is increased
on the three phases of matter.

If we begin with a cube of ice composed water molecules in a crystalized form we are dealing with water molecules with their lowest amount of energy. These molecules have such low amounts of energy that their movement is almost imperceptible. This form of matter for water is at and below 0 C.

If we add heat to the ice thereby increasing the energy in the molecules of water these molecules begin to vibrate at much higher velocities. These vibrations allow for the molecules of water to escape their positions in the crystal and begin to flow into a liquid. This range of temperature is from 0 C to 100 C.

If we continue to add energy and drive the temperature up to 100 C the molecules of water will vibrate so rapidly that they will break away from the liquid form and move into a gaseous state as steam escaping into the the air. This vaporization actually takes place constantly at the surface of the water creating a thin vapor layer at the surface of any body of water.

This is a simplification of the chemical process but basically the amount of energy in the molecules will determine the phase of matter.

Explanation:

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answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds