A boat at rest on the ocean moves up and down as water waves pass beneath it. What can be concluded about the movement of the water particles within a water wave?

Compare and contrast physical changes with chemical changes.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Describe the properties of sodium, chlorine, and sodium chloride