$$\text{Density} = \frac{\text{Mass}}{\text{Volume}}$$

Question 1

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

Accepted Answer

Dissolving sugar in water

Question 2

A scientist mixes sand and salt together. What type of matter is this mixture?

Accepted Answer

A heterogeneous mixture

Question 3

Which of the following is NOT a chemical property?

Accepted Answer

Melting point

Question 4

Which of the following is classified as an extensive property?

Accepted Answer

Mass

Question 5

A cube of silver has a side length of 3.0 cm and a density of 10.5 g/cm$$^3. $$What is its mass in kilograms?

Accepted Answer

$$0.2835 kg$$

Question 6

Which of the following temperature conversions is correct?

Accepted Answer

$$K = ^\circ C + 273$$

Question 7

Express $$8.2 	imes 10^4$ L using a metric prefix.

Accepted Answer

$$82 kL$$

Question 8

Which of the following is the correct scientific notation for 0.000520?

Accepted Answer

$$5.20 	imes 10$$^{-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 an example of a reversible change?

Accepted Answer

Melting ice

Question 11

If the density of an unknown metal is $$2.14 g/cm$^3$$, what is its density in kg/m$$^3$$?

Accepted Answer

$$2140 kg/m$^3$$

Question 12

Which SI base unit is used to measure electric current?

Accepted Answer

Ampere

Question 13

A solution contains 0.00364 mol of solute in 1.00 L of solution. How many significant figures are in the value 0.00364?

Accepted Answer

4

Question 14

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with water

Question 15

Which of the following is an intensive property?

Accepted Answer

Density

Question 16

A scientist submerges a metal object in water and the water level rises from 200 mL to 265 mL. What is the volume of the object?

Accepted Answer

$$65 mL$$

Question 17

Which of the following is the correct formula for density?

Accepted Answer

$$	ext{Density} = \frac{	ext{Mass}}{	ext{Volume}}$$

Question 18

A laboratory sample has a mass of $$1.482 	imes 10^6$ g. How many significant figures are in this measurement?

Accepted Answer

4

Question 19

Which of the following is the correct order of operations when performing calculations with significant figures?

Accepted Answer

Parentheses, exponents, multiplication/division, addition/subtraction

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Study Guide - Practice Questions