Callahan/Purkey: Biology Unit 3 Review

Name______Hr______

Define the meaning and use of these vocabulary words: These all can be found in the Unit 3 Biochemistry packets.

  1. atomic mass,
  1. atomic number,
  1. physical properties,
  1. chemical properties,
  1. physical change,
  1. chemical change,
  1. solution,
  1. solute
  1. solvent,
  1. suspension,
  1. colloid, (give an example)
  1. In a chemical reaction what are 4 ways that we know a chemical change has occurred?

A.

B.

C.

D.

1. What is the name of this element?___________

2. What is its atomic number?_________

3. What is the atomic mass of this element?______

4. How many Proton’s does this element have?______

5. How many Neutrons does this element have?______

6. How many electrons does this element have in its outer shell?______

1. Give examples and how to test for the following:

  1. Examples of Carbohydrates___________
  2. Examples of Lipids______Test______
  3. Examples of Proteins: ______Test: ______
  1. The basic structure of a lipid is a______and a ______
  2. The building blocks of proteins are______
  3. Organic compounds all contain______
  4. How does salt dissolve ice? How does it affect freezing temperature?

______

______

  1. In a solution of Salt and Water which is the solute and which is the solvent?

Solute______Solvent______

  1. What is a heterogeneous mixture?________
  2. What is a homogeneous mixture?_________
  3. What is an ion?___________
  4. Explain the difference between chemical and physical properties:_________
  5. Where do hydrogen bonds form? ______
  6. How do covalent bonds form?__________
  7. The chemical we use to test for Monosaccharaides is called______
  8. The chemical we use to test for Polysaccharides______
  9. If either test fails to change the chemical, then we have a ______
  10. If we test for proteins we use this type of acid______
  11. Which is denser? Ice or Liquid Water?______
  12. What allows Ice to float?____________
  13. What makes a fat saturated vs unsaturated?_________.
  14. How many different types of amino acids are there?______
  15. The pH Scale goes from 1-14. Solutions that have a pH from _____to______are Acidic while solutions that have a pH of _____to______are Basic. A pH of ______is considered neutral.
  16. What is the name of the lipid found in the cell membrane?______
  17. When building macromolecules, ______is taken out of the molecules to build larger molecules. This is called______.
  18. How many electrons can fill each of these levels around an atom?

1st level______2nd level______3rd level______

  1. Fill in the blanks on this table using the periodic table found in your packet and the abbreviations needed.

Number / Element / Symbol / Atomic Mass / Atomic Number / Protons / Neutrons / Electrons
1. / Sodium / Na
2. / Potassium / 19
3. / 26.98
4. / P

Draw the ring model of the following atoms showing the number of protons and neutrons in the nucleus and number of electrons in each energy level:

  1. Fluorine (F)
  1. Silicon (Si)