1. What is the basic unit of matter?
a. nucleus
cell
proton
atom

2. Identify the three particles that make up an atom and their location by drawing a Bohr model of a Beryllium atom.

3. How are isotopes identified?
By number of protons
By number of electrons
By mass number
By atomic number

4. What type of ion forms when an atom loses an electron?
Anion
Cation
Neutral ion
Negative ion

5. What is different about the following?
C-12 C-13 C-14

6. What are the 2 main types of chemical bonds?

7. How does each type of bond form?

8. Balance the equation and identify the reactants and products
Balance the equation and identify the reactants and products . __ H2 + __ O2  __ H2O _______________  ______________

9. What are the electrons called in the outermost energy level?
Subshell electrons
Unstable electrons
Valence electrons
Bonding electrons

10. Give two examples of evidence of a chemical reaction.

11. How do you know a reaction happened in the liver enzyme lab
How do you know a reaction happened in the liver enzyme lab? (What evidence did you observe?)

12. Why are water molecules considered polar?

13. Name the 4 classes of organic compounds.

14. What are the building blocks of proteins?
Nucleic acids
Amino acids
Polypeptides
carbohydrates

15. What is the job of a catalyst?
Slow down a reaction
Speed up a reaction
Change products to reactants more quickly
Increase the activation energy

16. Name 2 factors that affect enzyme activity.

18. Test Tuesday over Chapter 2 STUDY!!!!

19. Be sure to review… Notes from the chapter Read the chapter
Milk lab- different organic compounds, +/- results, calculations
Liver enzyme lab-how does change in Temp affect enzyme ability/Oxygen production?
Water molecules-cohesion/adhesion
Enzyme activity as a lock and key