Question 1

Which of the following best describes an intensive property?

Accepted Answer

It is independent of the amount of substance present, such as density or boiling point.

Question 2

A student measures the mass of a sample three times and gets values very close to each other, but far from the true value. This is an example of:

Accepted Answer

Poor accuracy, good precision

Question 3

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

Accepted Answer

Filtration

Question 4

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 5

Convert 25.0 °C to Kelvin using the correct formula.

Accepted Answer

$$K = 25.0 + 273.15 = 298.15$$

Question 6

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with a uniform composition throughout

Question 7

A sample contains only one kind of atom. Which classification does it fit?

Accepted Answer

Element

Question 8

Which of the following is the correct formula for density?

Accepted Answer

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

Question 9

A solution of salt water is boiled and the vapor is collected and condensed, leaving salt behind. This process is an example of:

Accepted Answer

Distillation

Question 10

Which of the following is NOT a base SI unit?

Accepted Answer

Liter (L)

Question 11

A student adds 12.345 g and 0.6 g. What is the correct answer with the proper number of significant figures?

Accepted Answer

$$12.9 g$$

Question 12

Which of the following is a physical change?

Accepted Answer

Melting of ice

Question 13

Which metric prefix represents $$10^{-6}$$?

Accepted Answer

Micro-

Question 14

A sample of gold has a mass of 96.5 g and a volume of 5.00 mL. What is its density?

Accepted Answer

$$19.3 g/mL$$

Question 15

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

Accepted Answer

Salad

Question 16

Which of the following best describes the scientific method?

Accepted Answer

A cyclical process involving observation, hypothesis, experimentation, and theory development

Question 17

Convert 5.00 inches to centimeters. (1 in = 2.54 cm)

Accepted Answer

$$5.00 	imes 2.54 = 12.7 cm$$

Question 18

Which of the following is a derived unit?

Accepted Answer

Liter (L)

Question 19

Which of the following is true about the Kelvin temperature scale?

Accepted Answer

It is the SI unit for temperature and has no negative values.

Question 20

A compound is defined as:

Accepted Answer

A substance made of two or more different kinds of elements chemically combined

Essentials of Matter and Measurement in Chemistry

Study Guide - Practice Questions