Chapter 7

Question 1

A characteristic of matter that can be measured or observed with the senses.

Answer 1

Physical property

Question 2

What are the states of matter?

Answer 2

Gas, liquid, solid.

Question 3

Matter that has no definite shape and that does not take a definite amount of space.

Answer 3

Gas

Question 4

Matter that takes the shape of its container and takes up a definite amount of space.

Answer 4

Liquid

Question 5

Matter that has a definite shape and that takes up a definite amount of space.

Answer 5

Solid

Question 6

The amount of matter in an object.

Answer 6

Mass

Question 7

The amount of space that matter takes up

Answer 7

Volume

Question 8

Ice is a…

Answer 8

Solid

Question 9

If you heat ice, it becomes a…

Answer 9

Liquid

Question 10

If you heat liquid water, it becomes a…

Answer 10

Gas called water vapor

Question 11

Texture, temperature, hardness, sound, flavor, and size are…

Answer 11

Physical properties that you can observe

Question 12

How can you observe physical properties?

Answer 12

By using your senses of sight, touch, taste, smell and hearing.

Question 13

Mass is given in units called…

Answer 13

Grams (g)

Question 14

How is mass measured

Answer 14

A scale

Question 15

Matter that is made up of two or more substances or materials that are physically combined is a…

Answer 15

Mixture

Question 16

This is a single kind of matter with certain properties. Every part of it is the same throughout.

Answer 16

A substance

Question 17

Salt, sugar, water, and gold are examples of _________ because every part of them are the same throughout

Answer 17

A substance

Question 18

Is salt water a substance or a mixture?

Answer 18

A mixture, because it combines The substances salt and water

Question 19

Is mud a substance or a mixture?

Answer 19

It is a mixture, because it combines dirt and water.

Question 20

Suppose you mix together fine sand that has small grains with coarse sand that has large grains the two kinds of sand would
A. Form new kinds of matter
B. Keep their original properties
C. Change color only
D. Change size and color

Answer 20

B. Keep their original properties

• making a mixture is a physical change. Mixing two or more substances can change the form, color or texture of the substances sometimes. But the properties of each substance in the mixture never change.

Question 21

How is making a mudpie a similar type of mixture to a bowl of soup with rice?

Answer 21

They both are a mixture of a solid substance and a liquid substance.

Question 22

Sugar water is a solid – liquid mixture. What is the solid?

Answer 22

Sugar

Question 23

How are a mixture of clothes in the washing machine full of water, and a damp sponge alike?

Answer 23

They are both a solid – liquid mixture

Question 24

How are you mixture of clothes in the washer full of water and a damp sponge different?

Answer 24

The clothes and water look like a solid – liquid mixture, but the sponge absorbs the water and looks like just a solid.

Question 25

Clouds are a liquid – gas mixture made up of...

Answer 25

Water drops and air

Question 26

Fizzy drinks, like Sprite, are what kind of a mixture...

Answer 26

Liquid – gas mixture | * the fizzy bubbles are the gas

Question 27

When you cook on a grill, or burn a campfire the smoke produced is a mixture of…

Answer 27

A solid – gas mixture | * The smoke has a air, other gases and tiny solid particles of ash

Question 28

This is a device or material that traps some substances and allows others to pass through...

Answer 28

A filter

Question 29

How can mixtures be separated?

Answer 29

You can use physical properties such as color, shape, texture, material, and others to take out some substances of a mixture. * for example, to separate the mixture of a bowl of M&M's, you could make a pile of each color.

Question 30

How could you separate the solid – liquid mixture of a pot containing water and spaghetti noodles?

Answer 30

By using a strainer to catch the noodles and drain the water out.

Question 31

What physical property do filters used to separate mixtures?

Answer 31

Filters separate a mixture by the size of its parts

Question 32

How could a magnet be used as a filter?

Answer 32

It could pick up only the objects in a mixture that have iron.

Question 33

Metal is often mixed with rock on the earth. How could the metal be separated from the rock?

Answer 33

The rocks can be heated until the metal melts and flows away.

Question 34

How could you separate a sand and salt mixture?

Answer 34

1. Add water to the sand and salt mixture. 2. The salt will dissolve and seem to disappear. 3. Then, strain the salt from the salty water

Question 35

Is there a mixture?

Answer 35

Yes, it is made up of different gases

Question 36

Anything that has mass and takes up space.

Answer 36

Matter