Plz me. i will give brainliest to first answer.

the following are three statements about reactions. which are correct?

statements

1. chemical reactions result in the formation of different elements by change in an atoms nucleus.
2. nuclear reactions result in the formation of different elements by a change in an atoms nucleus.
3. chemical reactions occur because of interactions between valence electrons.

answers

a. statements 1 and 2 are correct.
b. statements 2 and 3 are correct.
c. statements 1 and 3 are correct.
d. none of the statements are correct.

B

Explanation:

Well we know 3 is right because when there is a chemical reaction, the valence electrons are either being shared or given to another element.

2 is right because by having a nuclear reaction it essentially means the atoms nucleus is being changed too.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation: