Chapter 14 Properties of Matter

Question 1

anything that has mass and takes up space

Answer 1

matter

Question 2

a measure of how much the mass is pulled by gravity

Answer 2

weight

Question 3

the amount of matter in an object

Answer 3

mass

Question 4

kept the same

Answer 4

conserved

Question 5

the amout of space an object takes up

Answer 5

volume

Question 6

the smallest particle that can still be identified as the matter it came from

Answer 6

atom

Question 7

2 or more atoms joined together

Answer 7

molecule

Question 8

the dense area in the center of an atom

Answer 8

nucleus

Question 9

a kind of particle inside an atom that has a positive ( + ) electrical charge

Answer 9

proton

Question 10

a kind of particle inside an atom that has no electrical charge

Answer 10

neutron

Question 11

a kind of particle inside an atom that has a negative ( - ) electrical charge

Answer 11

electron

Question 12

matter that is made of only one kind of atom

Answer 12

element

Question 13

a chart that scientists use to organize the elements

Answer 13

periodic table

Question 14

an element’s number of protons

Answer 14

atomic number

Question 15

state of matter that has its own shape and volume

Answer 15

solid

Question 16

state of matter that has its own volume, but takes the shape of the container

Answer 16

liquid

Question 17

state of matter that doesn’t have a definite shape or volume

Answer 17

gas

Question 18

a change in state

Answer 18

physical change

Question 19

change from a solid to a liquid

Answer 19

melt

Question 20

change from a liquid to a gas

Answer 20

boil

Question 21

the process of changing from gas ( water vapor ) to a liquid

Answer 21

condensation

Question 22

change from liquid to a solid

Answer 22

freeze

Question 23

0 degrees celcius is both the _______ _____ and ________ _____ of water.

Answer 23

melting point, freezing point

Question 24

100 degrees celcius is both the _______ _____ and __________ _____ of water

Answer 24

boiling point, condensing point

Question 25

to change from a solid to a gas without becoming a liquid

Answer 25

sublime

Question 26

Melting point and boiling point are ________ __________ that describe matter. State of matter is also this.

Answer 26

physical characteristics

Question 27

a measure of how closely packed an objects an atoms are.

Answer 27

density

Question 28

a combination of 2 or more substances

Answer 28

mixture

Question 29

a mixture in which all parts are mixed evenly

Answer 29

solution

Question 30

give examples of physical changes

Answer 30

breaking, crushing, cutting, bending, melting, freezing, blending, and boiling

Question 31

to change from one substance into another substance

Answer 31

chemical reaction

Question 32

________ _______ change the chemical nature and properties substances to form new substances

Answer 32

chemical changes

Question 33

a measure of how easily it will burn, or combine rapidly with oxygen

Answer 33

combustibility

Question 34

the _________ of metal happens when iron combines with oxygen in the air and rust forms

Answer 34

corrosion

Question 35

the ability of a substance to go through a chemical change

Answer 35

reactivity

Question 36

the law that says that “the total mass of the products that form equals the total mass of the substances that react”

Answer 36

law of conservation of matter