Pure Substances and Mixteres Test

Question 1

What is a pure substance?

Answer 1

A substance with the same composition and properties throughout.

Question 2

What are pure substances made up of?

Answer 2

Elements and compounds

Question 3

What is an element

Answer 3

Building blocks of matter

Question 4

What is a compound

Answer 4

2 or more elements chemically combined

Question 5

Fill in the blank: Individual elements _____ their characteristics in a compound.

Answer 5

Lose

Question 6

What is the smallest part of a compound?

Answer 6

A molecule

Question 7

Fill in the blank: Elements _______ (can/can’t) be broken down into simpler substances.

Answer 7

Can’t

Question 8

What is the smallest part of an element?

Answer 8

An atom

Question 9

List some examples of elements:

Answer 9

Oxygen, helium, carbon

Question 10

List some examples of compounds:

Answer 10

Carbon Dioxide (CO2), Carbon Monoxide (CO), water (H20)

Question 11

What are mixtures made up of?

Answer 11

Heterogeneous and homogeneous mixtures

Question 12

What are the two different things matter can be broken down into?

Answer 12

Pure substances and mixtures.

Question 13

What are heterogeneous mixtures?

Answer 13

Mixtures in which you can still see the different parts

Question 14

What are homogeneous mixtures?

Answer 14

Has the same mixture throughout

Question 15

Give an example of heterogeneous mixtures:

Answer 15

Tossed salad, trail mix

Question 16

Give an example of a homogenous mixture:

Answer 16

Water with sodium chloride

Question 17

Define Atom

Answer 17

Basic unit of a chemical element

Question 18

Define molecules

Answer 18

A group of atoms bonded together (smallest chemical compound)

Question 19

Define Element

Answer 19

A part of something that is made up of one kind of atom

Question 20

Give an example of an element

Answer 20

Hydrogen and oxygen can’t be broken down into simpler substances

Question 21

Define compound

Answer 21

Substance made from more than one element that can be combined chemically.

Question 22

Give an example of a compound

Answer 22

Salt that has dissolved in water

Question 23

Define Mixture

Answer 23

Combination of two or more substances that can be taken apart

Question 24

Give an example of a mixture

Answer 24

Milk and cocoa cola combined

Question 25

What is the difference between a compound and a mixture?

Answer 25

Mixtures are made up of two or more substances that are not chemically combined. A compound is made up of 2 or more elements that are chemically combined.