Chapter 2 - Science

Question 1

The world we live in and interact with

Answer 1

Physical World

Question 2

The substance of the physical world

Answer 2

Matter

Question 3

A tiny particle of matter

Answer 3

Molecule

Question 4

A particle that makes up a molecule

Answer 4

Atom

Question 5

The ability to do work

Answer 5

Energy

Question 6

Heat energy is called?

Answer 6

Thermal energy

Question 7

3 states of Matter

Answer 7

Solid, liquid and gas

Question 8

A way to describe or sort matter according to its characteristics

Answer 8

Property

Question 9

Matter that can keep its shape

Answer 9

Solid

Question 10

Packed closely together

Answer 10

Dense

Question 11

Matter that cannot keep its shape, but can fill the shape of a container

Answer 11

Liquid

Question 12

Matter that can fill a space but escapes easily

Answer 12

Gas

Question 13

In what state of Matter are Molecules are packed closely together - very dense

Answer 13

Solids

Question 14

In what state of matter are molecules loosely connected (less dense)

Answer 14

Liquids

Question 15

In what state of matter are molecules only weakly attracted to each other (too much energy and move too quickly to stay together)

Answer 15

Gases

Question 16

A property that can be observed or measured

Answer 16

Physical Property

Question 17

The amount of space matter takes up

Answer 17

Volume

Question 18

The amount of matter an object has

Answer 18

Mass

Question 19

How heavy an object is because of the amount of gravity pulling its mass

Answer 19

Weight

Question 20

How tightly packed molecules are in matter

Answer 20

Density

Question 21

True or false
All solids melt

Answer 21

False

Question 22

The temperature at which a solid changes to liquid

Answer 22

Melting Point

Question 23

T or F
Heat energy always move from the cooler space to the warmer space.

Answer 23

False - heat energy always move from the warmer space to the cooler space

Question 24

Boiling point

Answer 24

The temperature at which liquid rapidly changes to a gas

Question 25

Freezing Point

Answer 25

The temperature at which liquid water changes to a solid

Question 26

What does it mean to expand?

Answer 26

Get larger

Question 27

What does it mean to contract?

Answer 27

Get smaller

Question 28

Do most substances expand or contract when heated?

Answer 28

Expand

Question 29

Do most substances expand or contract when cooled?

Answer 29

Contract

Question 30

Does water expand or contract when it gets colder?

Answer 30

Expand - less dense

Question 31

Two or more different kinds of matter combined together

Answer 31

Mixture

Question 32

A mixture in which one kind of substance is dissolved into another

Answer 32

Solution

Question 33

To break down into smaller pieces until it can no longer be seen

Answer 33

Dissolve

Question 34

The part of a solution that dissolves another substance

Answer 34

Solvent

Question 35

The part of a solution that is dissolved

Answer 35

Solute

Question 36

Gravel mixed with sand is an example of a _______

Answer 36

Mixture

Question 37

Water mixed with salt is an example of a _______

Answer 37

Solution

Question 38

Salt water is a solution where salt is ________ into water.

Answer 38

Dissolved

Question 39

Water is a _______ for many substances.

Answer 39

Solvent

Question 40

A _______ breaks down in a solvent.

Answer 40

Solute