Question 1

Which of the following best describes a chemical change?

Accepted Answer

Burning wood

Question 2

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

Accepted Answer

Density

Question 3

A student mixes vinegar and baking soda, producing bubbles and a new substance. What type of change has occurred?

Accepted Answer

Chemical change

Question 4

Which of the following is NOT a chemical property?

Accepted Answer

Has a yellow-orange color

Question 5

Which of the following is classified as an extensive property?

Accepted Answer

Mass

Question 6

Which of the following is a homogeneous mixture?

Accepted Answer

A cup of black coffee

Question 7

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

Accepted Answer

$$K = ^\circ C + 273.15$$

Question 8

A gold bar is best classified as which of the following?

Accepted Answer

Element

Question 9

Which of the following is NOT a physical property?

Accepted Answer

Iron bar rusts

Question 10

Which of the following is a reversible change?

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

It reacts explosively with oxygen gas

Question 13

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

Accepted Answer

Milligrams

Question 14

A student wants to convert 128 $$^\circF to $$Celsius. Which formula should they use?

Accepted Answer

$$^\circ C = \frac{5}{9} ( ^\circ F - 32 )$$

Question 15

Which of the following is a physical change?

Accepted Answer

Dissolving sugar in water

Question 16

Which of the following is a correct SI base unit and its physical quantity?

Accepted Answer

Kelvin - Temperature

Question 17

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with uniform composition throughout

Question 18

Which of the following is an example of a compound?

Accepted Answer

Ammonia ($$NH_3)$$

Question 19

Which of the following is NOT an extensive property?

Accepted Answer

Malleability

Question 20

Which of the following is a real-life example of a reversible change?

Accepted Answer

Condensing water vapor

Fundamental Concepts in Chemistry: Properties, Changes, and Measurement

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