Science Compounds And Elements

Question 0

Give an example of a pure compound.

Answer 0

Carbon dioxide

Question 1

Give an example of a pure element.

Answer 1

Oxygen

Question 2

Give an example of a mixture of elements.

Answer 2

Oxygen and helium

Question 3

Give an example of a mixture of compounds.

Answer 3

Alcohol and water

Question 4

Give an example of a mixture of elements and compounds.

Answer 4

Air

Question 5

Define compound.

Answer 5

A substance that is made up of 2 or more elements that are chemically joined together.

Question 6

Will compounds exist as molecules or atoms?

Answer 6

Molecules

Question 7

Describe an oxygen molecule.

Answer 7

3 sets of 2 red circles

Question 8

Describe a carbon dioxide molecule.

Answer 8

2 sets of 3 circles - red, black, red.

Question 9

Describe an oxygen and helium molecule.

Answer 9

2 sets made up of 2 joined red circles and an orange circle nearby but not touching.

Question 10

Describe an alcohol and water molecule.

Answer 10

3 groups:
2 of them have 2 black circles and 1 red circle with small white circles attached.
1 group which is a red circle with 2 small white circles.

Question 11

Describe an air molecule.

Answer 11

5 groups
2 made up of 2 blue circles
1 red, blue, red circles
1 made up of 2 red circles
1 red circle with 2 white circles.