Ehs Honors Chemistry Quiz 1
10 Questions
| Total Attempts: 231
Quiz over experimental design, significant figures, conversions, scientific notation and percent error
Questions and Answers
- 1.How many significant figures are in 3.04?
- A.
2
- B.
3
- C.
1
- D.
What are significant figures?
- 2.Convert 402 m into Km.
- A.
.402 km
- B.
402000 km
- C.
4.02 Km
- D.
40.2 Km
- 3.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the independent variable in this experiment?
- A.
The thermometer
- B.
The time it took for the salt water to freeze
- C.
The regular water
- D.
The types of water
- 4.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the dependent variable in this experiment?
- A.
The thermometer
- B.
The time it takes for the salt water to freeze
- C.
The regular water
- D.
The types of water
- 5.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the control in this experiment?
- A.
The thermometer
- B.
The time it took for the salt water to freeze
- C.
The regular tap water
- D.
The types of water
- 6.What is 3.22 x 103 in long form?
- A.
.322
- B.
32.2
- C.
322
- D.
3220
- 7.How many significant figures are in 0.00345
- A.
6
- B.
5
- C.
3
- D.
4
- 8.Convert 250 Km into mm.
- A.
.250 mm
- B.
.000000250 mm
- C.
25000mm
- D.
250000000 mm
- 9.A accepted measurement of a length of wood is 3.5 m. Your measurement of a piece of wood is 2.5 m. What is your percent error?
- A.
28.6%
- B.
71.4%
- C.
35%
- D.
25%
- 10.Using significant figures, what is the answer to the following problem?3.46 x 6.2 x 4 x 5.035
- A.
432
- B.
400
- C.
430
- D.
432.04
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