$$m = 3.0^3$ \times 10.5 = 283.5 g$$ $$= 0.2835 kg$$

$$\text{Density} = \frac{\text{mass}}{\text{volume}}$$

Question 1

Which of the following is classified as a homogeneous mixture?

Accepted Answer

Air

Question 2

Which process below is an example of a chemical change?

Accepted Answer

Burning wood

Question 3

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 4

A student measures the temperature of a solution as 25°C. What is this temperature in Kelvin?

Accepted Answer

$$K = 25 + 273.15 = 298.15$$

Question 5

Which of the following scientific notation values is written correctly?

Accepted Answer

$$5.220 	imes 10^4$

Question 6

Which SI base unit is used to measure electric current?

Accepted Answer

Ampere

Question 7

Convert 654 kg to g using metric prefixes.

Accepted Answer

$$654 	imes 10^3$ g

Question 8

How many significant figures are in the measurement 0.003640?

Accepted Answer

4

Question 9

A student measures the length of a pencil as 8.00 cm. How many significant figures are in this measurement?

Accepted Answer

3

Question 10

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with acid

Question 11

A cube of silver has a side length of 3.0 cm and a density of 10.5 g/cm³. What is its mass in kilograms?

Accepted Answer

$$m = 3.0^3$ 	imes 10.5 = 283.5 g$$ $$= 0.2835 kg$$

Question 12

Which of the following is an example of a reversible change?

Accepted Answer

Melting ice

Question 13

Which of the following is classified as an element?

Accepted Answer

Gold bar

Question 14

If the density of blood is $$1.060 	ext{ g/mL}$$, how many grams are found in $$400.0 	ext{ mL}$$?

Accepted Answer

$$1.060 	imes 400.0 = 424 g$$

Question 15

Which of the following is an extensive property?

Accepted Answer

Mass

Question 16

A scientist places a solid in a beaker and the water level increases from 200 mL to 265 mL. What is the volume of the solid?

Accepted Answer

65 mL

Question 17

Which of the following is a chemical property of hydrogen gas?

Accepted Answer

It reacts explosively with oxygen gas

Question 18

Which of the following is the correct formula for density?

Accepted Answer

$$	ext{Density} = \frac{	ext{mass}}{	ext{volume}}$$

Question 19

Which of the following is NOT an example of dimensional analysis?

Accepted Answer

Multiplying two numbers with the same units

Introduction to General Chemistry: Matter, Measurement, and Basic Calculations

Study Guide - Practice Questions