Question 1

Which of the following best describes vegetable soup in terms of its classification in chemistry?

Accepted Answer

Mixture, heterogeneous

Question 2

Express 602,000,000,000 in exponential form with the correct number of significant figures.

Accepted Answer

$$6.02 	imes 10$$^{11}$$

Question 3

Which of the following is the correct conversion of 9535 m to kilometers?

Accepted Answer

$$9.535 km$$

Question 4

A student multiplies $$6.75 	imes 10^5$ by 7.85$$ 	imes 2.666$$ and gets 1.4$$ 	imes $$10^7. $$Which rule did they use to determine the number of significant figures in the answer?

Accepted Answer

The answer should have the same number of significant figures as the number with the least significant figures in the calculation.

Question 5

Which of the following is the correct ordinary number for $$4.66 	imes 10$$^{-4}$$?

Accepted Answer

$$0.000466$$

Question 6

A sample contains 0.324 g of aspirin per tablet. How many pounds of aspirin are in a bottle containing 500 tablets? (1 lb = 454 g)

Accepted Answer

$$0.357 lb$$

Question 7

Which of the following is a pure substance?

Accepted Answer

Aluminum metal

Question 8

Convert $$0.00478 L to mL.$$

Accepted Answer

$$4.78 mL$$

Question 9

Which of the following is the correct exponential form for 0.000365?

Accepted Answer

$$3.65 	imes 10$$^{-4}$$

Question 10

Which of the following is a homogeneous mixture?

Accepted Answer

Gasoline

Question 11

What is the correct number of significant figures in the measurement 0.0850?

Accepted Answer

3

Question 12

Which of the following is the correct conversion of 65 cm to meters?

Accepted Answer

$$0.65 m$$

Question 13

Which of the following is the correct ordinary number for $$2.20 	imes 10^3$?

Accepted Answer

$$2200$$

Question 14

A student calculates $$(8.65 + 7.45) \div (64 - 3.55)$$ and gets $$0.27. $$Which rule did they use to determine the number of significant figures in the answer?

Accepted Answer

The answer should have the same number of significant figures as the number with the least significant figures in the calculation.

Question 15

Which of the following is the correct exponential form for 2000?

Accepted Answer

$$2.0 	imes 10^3$

Question 16

Which of the following is a heterogeneous mixture?

Accepted Answer

Concrete

Question 17

How many significant figures are in the measurement 35,500 people?

Accepted Answer

5

Question 18

Which of the following is the correct ordinary number for $$1.11 	imes 10$$^{-2}$$?

Accepted Answer

$$0.011$$

Question 19

Which of the following is the correct conversion of 79 g to kg?

Accepted Answer

$$0.079 kg$$

Question 20

Which of the following is the correct exponential form for 0.00000240?

Accepted Answer

$$2.40 	imes 10$$^{-6}$$

General Chemistry Fundamentals: Significant Figures, Scientific Notation, Classification of Matter, and Metric Conversions

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