Physical Science

Question 1

What precautions should be taken before doing a lab?

Answer 1

• googles
• hair
• shoes
• cothes

Question 2

Km

Answer 2

kilometer

Question 3

hm

Answer 3

hectometer

Question 4

dm

Answer 4

decameter

Question 5

m

Answer 5

meter

Question 6

dm

Answer 6

decimeter

Question 7

cm

Answer 7

centimeter

Question 8

mm

Answer 8

millimeter

Question 9

Make an experiment!!!

Answer 9

something cool beans!!!

Question 10

Formula for density

Answer 10

density=mass over volume

Question 11

What is density(no math terms)

Answer 11

How tightly packed matter is in a given volume

Question 12

If an object sinks in the water, what can you say about the object’s density compared to water?

Answer 12

The object is denser than water

Question 13

Weight

Answer 13

affect of gravity on mass

Question 14

mass

Answer 14

the amount of matter in an object

Question 15

volume

Answer 15

how much space an object takes up

Question 16

matter

Answer 16

can not be created nor destroyed

anything that takes up space(has volume) and has mass

Question 17

element

Answer 17

if all the atoms in the substance have the same identity

Question 18

Substance

Answer 18

a type of matter with a fixed composition

Question 19

molecule

Answer 19

two or more molecules combined

Question 20

compound

Answer 20

a substance where the atoms of 2 or more elements are combined in a fixed proportion

Question 21

mixture

Answer 21

putting 2 or more things together

Question 22

heterogeneous

Answer 22

different materials that can be distinguished easily

Question 23

homogenous

Answer 23

2 or more gaseous liquid or solid substance blended evenly throughout

Question 24

Properties of matter chart

Answer 24

• matter
  - pure substance -mixture
  - element -compound -homo -hetero

Question 25

Physical change

Answer 25

Can be reversed

ex. solid to liquid

Question 26

chemical change

Answer 26

cant be reversed

ex. baking, cooking

Question 27

4 states of matter

-least to most energy

Answer 27

solid-liquid-gas-plasma

Question 28

melting

Answer 28

solid to liquid

Question 29

evaporation

Answer 29

liquid to gas

Question 30

condensation

Answer 30

gas to liquid

Question 31

freezing

Answer 31

liquid to solid

Question 32

freezing and boiling

-Celsius, Fahrenheit

Answer 32

0, 100

32, 212

Question 33

proton

Answer 33

positive, in nucleus

Question 34

neutrons

Answer 34

neutral, in nucleus

Question 35

electrons

Answer 35

negative, valence shell

Question 36

valence shell

Answer 36

outermost shell

Question 37

electrons on shelf

Answer 37

2
8
18
32