Chemistry Practice Questions - Review Test #3
Try your skill.....test your knowledge.
Number your paper 1 - 18. All the following questions are multiple choice. Write your answer next to each number on your paper.
The answers to the questions are at the bottom of the quiz.
1. Which pair of elements are both metals?
| A. chlorine and argon |
| B. sulfur and selenium |
| C. calcium and sodium |
| D. lithium and oxygen |
2. Which element has an atomic number of 47?
| A. sodium |
| B. tungsten |
| C. lead |
| D. silver |
3. What has been removed from a piece of fruit that has been dried?
| A. water |
| B. salt |
| C. nitrogen |
| D. carbon |
4. Which statement is true about exothermic reactions? A + B = C + D + energy
| A. Heat is reabsorbed in the form of new atoms. |
| B. The mass of the second side is bigger than the mass of the first side. |
| C. Energy is released as heat or light. |
| D. Energy is released momentarily, and then reabsorbed. |
5. The atoms and molecules in matter
| A. are attracted o one another |
| B. are constantly moving |
| C. move faster at higher temperatures |
| D. All the above |
6. Melting steel so that it can be poured into a mold for an automobile part is an
| A. endothermic reaction because it is releasing heat. |
| B. exothermic reaction because it is releasing heat. |
| C. endothermic reaction because it is adding heat. |
| D. exothermic reaction because it is adding heat. |
7. Trash decomposing at the dump is considered a
| A. physical change because the identity of the objects are still the same. |
| B. physical change because the identity of the objects are different. |
| C. chemical change because the identity of the objects are still the same. |
| D. chemical change because the identity of the objects are different. |
8. Organizing the 5 states of matter from most energetic to least energetic would look like this:
| A. liquid, gas, plasma, BEC, solid |
| B. Solid, BEC, liquid, gas, plasma |
| C. plasma, gas, liquid, solid, BEC |
| D. BEC, solid, liquid, gas, plasma |
9. Transition metals are found in groups 3 through 12 on the periodic table. These metals
| A. have properties different than any other families. |
| B. are sometimes used in jewelry. |
| C. are often used in electrical wiring. |
| D. all of the above are correct. |
10. Group 1 on the periodic table located on the far left side column are
| A. the alkali metals with only 1 valence electron. |
| B. the alkaline metals with 2 valence electrons. |
| C. the transition metals with 1-8 valence electrons. |
| D. the non-metals with 6, 7 or 8 valence electrons. |
11. Which of the following are the best conductors of heat and electricity?
| A. non-metals. |
| B. metals. |
| C. halogens. |
| D. noble gases. |
12. Elements with 7 valence electrons are placed into this "family" of elements:
| A. noble gases. |
| B. alkali metals. |
| C. halogens. |
| D. non-metals. |
13. Elements found on either side of the zig-zag line on the periodic table are classified as
| A. metals |
| B. metalloids |
| C. non-metals |
| D. halogens |
14. The nucleus of Arsenic would have these many protons:
| A. 33 |
| B. 75 |
| C. 42 |
| D. 41 |
15. The least active elements on the periodic table would be the
| A. halogens |
| B. noble gases |
| C. alkali metals |
| D. transition elements |
16. What is the density of an object whose mass is 35g and volume is 27.9 mL?
| A. 1.25 g/mL |
| B. .80 g/mL |
| C. 62.9 g/mL |
| D. 7.1 g/mL |
17. Particles in a solid differ from particles in a gas because
| A. particles in a solid vibrate faster. |
| B. particles in a gas move as one unit. |
| C. particles in a solid are joined and move as a unit. |
| D. gas particles are attracted to one another. |
18. The pH of most soaps fall within what range on the pH scale?
| A. 2-3 |
| B. 6-7 |
| C. 8-9 |
| D. 10-11 |
Answers:
|
# |
Answer |
|
1 |
C |
|
2 |
D |
|
3 |
A |
|
4 |
C |
|
5 |
D |
|
6 |
C |
|
7 |
D |
|
8 |
C |
|
9 |
D |
|
10 |
A |
|
11 |
B |
|
12 |
C |
|
13 |
B |
|
14 |
A |
|
15 |
B |
| 16 | A |
| 17 | C |
| 18 | C |