#1: which of the following statements is true? a. in an endothermic reaction, the energy of the products is the same as the energy of the reactants. b. in an endothermic reaction, the energy of the products is less than the energy of the reactants. c. in an exothermic reaction, the energy of the products is the same as the energy of the reactants. d. in an exothermic reaction, the energy of the products is less than the energy of the reactants. ***my answer; d is that right? @aaronq : )

Option (D) is the correct answer.

Explanation:

In an endothermic reaction energy is absorbed by reactant molecules in a chemical reaction as a result energy of products is more than the energy of reactants.  

Whereas in an exothermic reaction energy is released by a chemical reaction as a result energy of reactants is more than the energy of products.  

Therefore, we can conclude that the correct statement is in an exothermic reaction, the energy of the products is less than the energy of the reactants.

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:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error