Matter 5

Question 1

What is a substance that has mass, takes up space, and can exist as a solid, liquid, or gas?

Answer 1

matter

Question 2

How many elements are known on Earth?

Answer 2

109

Question 3

Where are all of the elements known on Earth listed?

Answer 3

Periodic Table

Question 4

When elements combine chemically they form __________.

Answer 4

compounds

Question 5

When you mix baking soda and vinegar you know a chemical change has occured because ___________.

Answer 5

a new gas is produced

Question 6

You can see that a chemical change has occured when a tomato ripens because __________.

Answer 6

there is a color change

Question 7

Each element is made of only one kind of __________.

Answer 7

atom

Question 8

What type of mixture do you get when salt crystals dissolve in water?

Answer 8

a solution

Question 9

What would a bowl filled with different types of candy be?

Answer 9

a mixture

Question 10

A solid can change to a liquid and a liquid can change to a gas when matter is __________.

Answer 10

heated

Question 11

Liquids can be changed to a solid and gases can be changed to liquids when matter is __________.

Answer 11

cooled

Question 12

What are changes that occur in mixtures and solutions called?

Answer 12

Physical

Question 13

When chalk is written CaCO₃, what is this called?

Answer 13

a chemical formula

Question 14

What is formed when atoms are grouped with other atoms

Answer 14

molecules

Question 15

What does a chemical formula tell you?

Answer 15

The number and kind of each atom in a compound.

Question 16

What is a substance that cannot be changed into a simpler substance?

Answer 16

an element