Investigation 1

Question 1

What is matter?

Answer 1

Anything that has weight and occupies space is called matter.

Question 2

What are the 3 forms of matter?

Answer 2

Three form of matter are solid, liquid and gas.

Question 3

What are solids?

Answer 3

Solids have mass, take up space, and have a definite volume and definite shape

Question 4

What is a liquid?

Answer 4

Liquid is a material that takes the shape of the container it is in, has a definite volume, has mass, and takes up space.

Question 5

What is a gas?

Answer 5

A gas occupies all the volume of the container it is in - no definite volume or shape. They also have mass and take up space.

Question 6

What is a mixture?

Answer 6

Combination of 2 or more materials is called a mixture.

Question 7

What are some examples of solids and liquid mixtures?

Answer 7

flour and water, cereal and milk

Question 8

What are some examples of gas and liquid mixtures?

Answer 8

CO2 in liquid form bubbles and evaporate

Question 9

What are some examples of solid and gas mixtures?

Answer 9

Snow - it is a mixture of air and frozen water

Question 10

What is a solution?

Answer 10

special mixture that forms when 1 or more substances dissolve each other

Question 11

What does it mean to dissolve?

Answer 11

breaks into peices that are invisible

Question 12

What are some example of dissolving?

Answer 12

salt and H2O become saltwater solution and salt becomes invisible

Question 13

What is soluble?

Answer 13

solid substance that dissolves into water

Question 14

What is insoluble?

Answer 14

does not dissolve

Question 15

What is solubility?

Answer 15

the ability of a substance to dissolve or not

Question 16

What is an example of insoluble mixture?

Answer 16

Water and sand

Question 17

Can mixtures be separated?

Answer 17

Yes

Question 18

What are some of the ways in which mixtures can be separated?

Answer 18

Mixtures can be separated using differences in physical properties of the components, such as size - large or small, different evaporation ability, floating or sinking, magnetic or non-magnetic.

Question 19

What is evaporation?

Answer 19

Evaporation is the change of state from liquid to gas.

Question 20

How can salt be separated from water in a salt water solution?

Answer 20

Through evaporation. Water evaporates, but salt doesn’t?

Question 21

How can a mixture of paper clips, toothpicks and sand be separated?

Answer 21

We can use a magnet to pick out all the paper clips since paper clips are magnetic. Sand and toothpick mixture can be separated using water. Toothpicks will float and sand will sink.