Question 1

Which of the following best describes a chemical property, as opposed to a physical property, of matter?

Accepted Answer

Gold does not react with hydrochloric acid.

Question 2

A scientist observes that a metal reacts vigorously with acid, producing a gas. What step of the scientific method is this?

Accepted Answer

Making an observation

Question 3

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

Accepted Answer

Salad dressing

Question 4

Which of the following statements about density is correct?

Accepted Answer

Density is an intensive property and does not depend on the amount of matter.

Question 5

A cube of osmium has sides of 1.25 inches. Given the density of osmium is $$22.48\ \mathrm{g/cm^3$}$$, what is the mass of the cube? (1 inch = 2.54 cm)

Accepted Answer

$$\approx 719\ \mathrm{g}$$

Question 6

Which of the following is a correct statement about systematic and random errors?

Accepted Answer

Systematic errors have a definite value and cause bias.

Question 7

Which of the following is a derived SI unit?

Accepted Answer

Joule (J)

Question 8

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more elements chemically combined in a fixed ratio.

Question 9

A student adds 15.02 g, 9986.0 g, and 3.518 g. What is the correct answer with the proper number of significant figures?

Accepted Answer

$$10,004.5\ \mathrm{g}$$

Question 10

Which of the following is NOT a significant figure in the number 0.0040500?

Accepted Answer

The zeros before the 4

Question 11

Which of the following best describes the difference between accuracy and precision?

Accepted Answer

Accuracy is closeness to the true value; precision is reproducibility.

Question 12

Which of the following is a physical change?

Accepted Answer

Melting ice

Question 13

Which of the following is a homogeneous mixture?

Accepted Answer

Air

Question 14

Which of the following is the correct SI base unit for temperature?

Accepted Answer

Kelvin (K)

Question 15

A thermometer consistently reads 2°C lower than the actual temperature. This is an example of:

Accepted Answer

Systematic error

Question 16

Which of the following is the correct formula for density?

Accepted Answer

$$d = \frac{m}{V}$$

Question 17

Which of the following is a correct conversion for 1 liter?

Accepted Answer

$$1\ \mathrm{L} = 1\ \mathrm{dm^3$}$$

Question 18

Which of the following is a correct statement about mixtures?

Accepted Answer

Homogeneous mixtures have uniform composition throughout.

Question 19

Which of the following is the correct number of significant figures in the measurement 0.04050?

Accepted Answer

4

Question 20

Which of the following is a correct rule for rounding off numerical results?

Accepted Answer

If the digit dropped is 5, increase the final digit by one unit.

Matter: Its Properties and Measurement – General Chemistry Chapter 1 Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards