Chemistry Review Sheet Name ______
Review Questions:
1. List two examples of a physical change.
a. ______
b. ______
2. List two examples of a chemical change.
a. ______
b. ______
3. What is some evidence that a chemical reaction has taken place?
______
4. Name the three states of matter
a. ______
b. ______
c. ______
Now write the name of one element that exists in that state on the same line.
5. What is the atomic number of N? ______
6. What is the element name of W? ______
7. How many electrons does helium have? ______
8. How many neutrons are found in Fe? ______
9. What parts of the periodic table are the arrows pointing to? Label them.
10. What type of charge do each of the following parts of an atom have?
o Protons – ______
o Electrons – ______
o Neutrons – ______
11. How many atoms of oxygen are in CO2? ______
12. What is the total number of atoms in C6H12O6? ______
13. Explain the law of conservation of mass.______
______
14. Review the three types of chemical reactions. (Pages 29-31)
Synthesis (build up)
Decomposition (break down)
Replacement (switch around)
15. What happens to temperature during a phase change? ______
16. What happens to energy during a phase change? ______
17. The ______dissolves the ______in a solution.
Vocabulary:
Do you know what the following terms mean?
Write the definitions of the following vocabulary words on a separate sheet of paper.
§ Matter
§ Element
§ Physical change
§ Chemical change
§ Precipitate
§ Atom
§ Molecule
§ Chemical equation
§ Coefficient
§ Reactant
§ Product
§ Synthesis reaction
§ Decomposition reaction
§ Replacement reaction
§ Solution
§ Solute
§ Solvent
§ Dilute solution
§ Concentrated solution
§ Solubility
§ Principle of Conservation of Mass
· Study all of your notes.
· Study your vocabulary cards.
· Study your book (check your notes to see what chapters and sections).