Given two temperatures, 39 °F and 51 °F, which of the following correctly compares the number of chances for particles to bounce off each other during a chemical reaction? Same at both
Lower at 39 °F
Lower at 51 OF
Does not depend on temperature

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.

the answer is c. nacl

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

idk i'm not smart

explanation:

t h