$$F = (C \times \frac{9}{5}) + 32$$

Question 1

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more elements that are chemically bonded together.

Question 2

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

Accepted Answer

Soda

Question 3

Which process is a chemical change?

Accepted Answer

Cooking an egg

Question 4

Which of the following is NOT a physical property?

Accepted Answer

An iron bar rusts.

Question 5

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

Accepted Answer

Melting point

Question 6

Which of the following is classified as an extensive property?

Accepted Answer

Kilograms

Question 7

A student mixes baking soda and vinegar, producing bubbles and a new substance. This is an example of:

Accepted Answer

A chemical change

Question 8

Which of the following is a reversible change?

Accepted Answer

Melting a chocolate bar then re-solidifying it in the freezer

Question 9

Which of the following is NOT a chemical property for an unknown element?

Accepted Answer

It has a yellow-orange color.

Question 10

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

Accepted Answer

It reacts explosively with oxygen gas.

Question 11

Which of the following is a correct statement about mixtures?

Accepted Answer

Mixtures can be separated by physical means.

Question 12

Which of the following is a physical change?

Accepted Answer

Tearing a piece of paper

Question 13

Which of the following is a homogeneous mixture?

Accepted Answer

A cup of black coffee

Question 14

Which of the following is NOT an example of an intensive property?

Accepted Answer

Milligrams

Question 15

Which of the following is the correct scientific notation for 0.00000325?

Accepted Answer

3.25 	imes $$10^{-6}$$

Question 16

If the melting point of phosphorus is 44.15°C, what is this temperature in Kelvin?

Accepted Answer

$$K = 44.15 + 273.15 = 317.30\ K$$

Question 17

Which SI base unit is used to measure the amount of substance?

Accepted Answer

Mole (mol)

Question 18

Which of the following would have the greatest flow of thermal energy in the form of heat?

Accepted Answer

120 g H2O at 50°C and 40 g H2O at 10°C

Question 19

Which of the following is a correct conversion from Celsius to Fahrenheit?

Accepted Answer

$$F = (C 	imes \frac{9}{5}) + 32$$

Question 20

Which of the following is a compound?

Accepted Answer

Ammonia (NH₃)

Introduction to Matter, Properties, and Measurement in Chemistry

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