$$1.15 \times 10$$^{-8}$$ km^3$

Question 1

Which of the following best describes a chemical change?

Accepted Answer

Iron rusting

Question 2

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

Accepted Answer

Density

Question 3

A student mixes sand and salt together. What type of mixture is formed?

Accepted Answer

Heterogeneous mixture

Question 4

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with acids

Question 5

Which of the following is classified as an extensive property?

Accepted Answer

Kilograms

Question 6

Which process is an example of a reversible change?

Accepted Answer

Melting chocolate

Question 7

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

Accepted Answer

It reacts explosively with oxygen gas

Question 8

Which of the following substances is a pure substance?

Accepted Answer

Crystalline sugar

Question 9

What is the SI base unit for mass?

Accepted Answer

Kilogram (kg)

Question 10

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

Accepted Answer

micro

Question 11

A room has a volume of $$1.15 	imes 10^7$ cm^3$. What is the volume in km^3$?

Accepted Answer

$$1.15 	imes 10$$^{-8}$$ km^3$

Question 12

Which of the following is a homogeneous mixture?

Accepted Answer

Cup of black coffee

Question 13

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

Accepted Answer

Milligrams

Question 14

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

Accepted Answer

Boiling point

Question 15

Which of the following is the correct formula to convert Celsius to Kelvin?

Accepted Answer

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

Question 16

Which of the following is a physical change?

Accepted Answer

Melting wax

Question 17

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

Accepted Answer

It has a yellow-orange color

Question 18

Which of the following is a compound?

Accepted Answer

Ammonia ($$NH_3)$$

Question 19

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

Accepted Answer

120 g H$$_2O at 50$^\backslash!\backslash!^\circC$$

Question 20

Which of the following is the correct formula to convert Fahrenheit to Celsius?

Accepted Answer

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

Introduction to Matter, Properties, and Measurement in Chemistry

Guida di studio - Domande di pratica