Choose the words to complete the sentences. A change in the thermal energy of a substance can lead to a change of state. For example, when heat is added to a solid, its particles move. Choose: A) Faster
B) Closer together
C) Slower
D)The same speed
Once the solid gains enough thermal energy, it can change to a state. Choose:
A)Liquid
B)Gas
C)Solid
D)Frozen

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

it's c. elements are placed in rows based on how may valencies electrons have.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

the objects have the same charge.