Question 1

Which of the following is a derived SI unit?

Accepted Answer

$$\mathrm{m/s}$$

Question 2

Which property is an example of an intensive property?

Accepted Answer

Melting point

Question 3

A student measures the mass of a sample as 0.006606 kg. How many significant figures does this measurement have?

Accepted Answer

5

Question 4

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with evenly distributed components, like saltwater

Question 5

Which separation technique would be most appropriate to separate a mixture of sand and water?

Accepted Answer

Filtration

Question 6

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with acid

Question 7

A measurement is recorded as 5.008 kg. According to the rules of significant figures, how many significant figures does this value have?

Accepted Answer

4

Question 8

Which of the following is an example of a chemical property?

Accepted Answer

Reactivity with oxygen

Question 9

A student adds 1.2, 4.41, and 5.61. According to the rules for significant figures in addition, what is the correct answer?

Accepted Answer

$$11.2$$

Question 10

Which state of matter is characterized by having an indefinite shape and indefinite volume, and is easily compressed?

Accepted Answer

Gas

Question 11

Which of the following is a correct statement about the difference between a gas and a vapor?

Accepted Answer

A gas is in the gaseous state at room temperature, while a vapor is generally a solid or liquid at room temperature.

Question 12

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

Chili

Question 13

Which division of chemistry would most likely study the rate of a reaction and the energy changes involved?

Accepted Answer

Physical Chemistry

Question 14

A scientist is interested in the composition of a new alloy. Which division of chemistry is most relevant to this research?

Accepted Answer

Analytical Chemistry

Question 15

Which of the following is a pure substance?

Accepted Answer

Gold

Question 16

A student calculates $$\frac{23}{448}$$ and reports the answer as $$0.051. If $$the original data had two significant figures, is this answer correctly rounded?

Accepted Answer

No, because the answer should have three significant figures.

Question 17

Which of the following is an extensive property?

Accepted Answer

Volume

Question 18

Which of the following best describes the process of distillation?

Accepted Answer

Separating substances based on their boiling points by boiling and condensing

Question 19

Which of the following is a correct statement about significant figures in scientific notation?

Accepted Answer

All digits in the coefficient are significant.

Question 20

A student adds $$77.2$$ and $$10.46$$ and gets $$87.66. $$According to the rules for significant figures, what is the correct answer?

Accepted Answer

$$87.7$$

Introduction to General Chemistry: Measurement, Matter, and Mixtures

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