Science Unit-Ch-Ch-Changes

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1

Particles

a tiny amount or small piece; speck; trace

2

Matter

all substances that contain atoms and take up space

3

Color

a quality of light as our eyes see it

4

Texture

the feel or look of a surface

5

Reflectivity/Luster

created by or resulting from reflection

6

Flammability

able to catch on fire easily

7

Magnetism

the power of a magnet to attract

8

Solubility

ability to be dissolved

9

Chemical Reaction

a process that involves rearrangement of the molecules of a substance

10

Density

the state or condition of having parts very close together with little space between

11

Law of Conservation of Matter

the principle that matter cannot be created or destroyed

12

Weight

the quality of being heavy

13

Mass

the amount of matter an object has

14

Substance

that of which something is made

15

Physical Change

any change that occurs without altering the chemical composition of a substance

16

Solid

having a firm shape or form that can be measured in length, width, and height

17

Liquid

in a form that flows easily and is neither a solid nor a gas

18

Gas

in a form that flows freely and is neither a solid nor a liquid