1. Stacy

2. DO NOW Answer the questions about macromolecules at the top of the class notes sheet you picked up

3. Anamaria

4. Kisbel

5. Eric

6. Mya

7. Chemical Reactions

8. A chemical reaction is a process that changes one set of chemicals into another 2 or more substances react to form something completely different.

9. The elements or compounds that go into a reaction are called………… The elements or compounds that come out of a reaction are called………….

10. The elements or compounds that go into a reaction are called reactants The elements or compounds that come out of a reaction are called……….…

11. The elements or compounds that go into a reaction are called reactants The elements or compounds that come out of a reaction are called products

12. Chemical Reactions Chemical reactions involve changes in chemical bonds that join atoms in compounds. In a chemical reaction, bonds are broken or bonds are formed

13. Energy and Chemical Reactions

14. Energy Every chemical reaction either absorbs or releases energy. Chemical reactions that release energy occur on their own, or spontaneously. Chemical reactions that absorb energy will not occur without a source of energy.

17. C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O

18. Reactants Products C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O Reaction Occurs

19. Activation Energy

20. The energy needed to start a chemical reaction is called activation energy. “Get over the hump.”

23. Activation Energy

24. Reactants Activation Energy

25. Reaction is happening Reactants Activation Energy

26. Reaction is happening Reactants Products Activation Energy

30. A catalyst is a biological molecule that speeds up the rate of a chemical reaction

31. Enymes Enzymes are special kinds of…….

32. Enzymes

33. Enymes Enzymes are special kinds of proteins that act as catalysts. Enzymes speed up the rate of chemical reactions in living things

34. Enzymes To speed up the rate of a chemical reaction, enzymes lower the activation energy.

35. Enzymes To speed up the rate of a chemical reaction, enzymes lower the activation energy.

37. Enzyme proteins are very specific. Each enzyme is responsible for ONE specific reaction.

38. An enzyme-catalyzed reaction can make a chemical reaction occur 10 million times faster than it would normally.