True or False Questions on Chemical Reactions?

16. In a synthesis reaction, two or more simple substances combine to form


a new, more complex substance.


a. true


b. false








17. A decrease in the concentration of reactants will increase the rate of


chemical reaction.


a. true


b. false








18. Reactants are written to the right of the arrow in a chemical equation.


a. true


b. false








19. The study of reaction rates is called mechanics.


a. true


b. false








20. A substance that increases a reaction rate without itself being changed


by the reaction is called a catalyst.


a. true


b. falseTrue or False Questions on Chemical Reactions?
16. True


Reactants are relatively simple but when two or more reactants combine they are more complex. Ex. A + B -%26gt; AB





17. False


With a decreased concentration less molecules are able to react therefore the reaction is slower.





18. False


Reactants are on the left side of the arrow while the right side contains the products. A + B are reactants to form -%26gt; AB the product





19. False


It is called Kinetics.


Reaction mechanism is the steps involved in a reaction.





20. True


A catalyst speeds up the reaction by offering a different reaction mechanism with lower Ea so the reaction speeds up. An enzyme is a biological catalyst. An inhibitor causes a reaction to slow down often by creating a new reaction mechanism with longer more complex steps.True or False Questions on Chemical Reactions?
16. a. true


17. b. false


An increase in the concentration of the reactants will increase the rate of reaction


18. b. false


Reactants are to the left of the arrow


19. b. false


The study of reaction rates is called kinetics


20. a. true





I strongly suggest you read and catch up on the basics. This is high school chemistry.