Science Matter Unit Test

Front 1

Atomic Mass

Back 1

Weighted average mass of an element

Front 2

Substance

Back 2

A sample of matter that has the same composition and properties throughout

Front 3

Law of Conservation of Matter

Back 3

States that matter is neither created nor destroyed, only changed in form

Front 4

Electrons

Back 4

Negatively charged subatomic particles

Front 5

Nucleus

Back 5

Positively charged central part of the atom

Front 6

Proton

Back 6

Positively charged particle in the nucleus of the atom

Front 7

Neutron

Back 7

Uncharged particle in the nucleus of the atom

Front 8

Metals

Back 8

Elements that generally have a shiny or metallic luster

Front 9

Element

Back 9

Matter made up of only one kind of atom

Front 10

Atomic Number

Back 10

Tells you the number of protons in the nucleus of each atom of an element

Front 11

Matter

Back 11

Anything that has mass and takes up space

Front 12

Isotopes

Back 12

Atoms of the same element that have different numbers of neutrons

Front 13

Atom

Back 13

A small particle that makes up most types of matter on Earth

Front 14

Compound

Back 14

A pure substance whose smallest unit is made up of atoms of more than one element

Front 15

Mixtures

Back 15

Formed when two or more substances come together, but don't combine to form a new substance

Front 16

Nonmetals

Back 16

Elements that are usually dull in appearance and poor conductors of heat and electricity

Front 17

Metalloids

Back 17

Elements that have characteristics of both metals and nonmetals

Front 18

Salts

Back 18

Made of a metal and a nonmetal, formed when acids and bases react

Front 19

State of Matter

Back 19

Whether a sample is a solid, liquid, or gas

Front 20

Acids

Back 20

Most react with certain metals

Front 21

Reactivity

Back 21

How easily one thing reacts with something else

Front 22

Physical Property

Back 22

A characteristic of matter that is observed using your senses

Front 23

Bases

Back 23

Tastes bitter and feel slippery

Front 24

Chemical Change

Back 24

One material changes into a different material with different properties

Front 25

Density

Back 25

Amount of mass in a given volume

Front 26

Physical Change

Back 26

Change in size, shape, or state

Front 27

Chemical Property

Back 27

Characteristic that allows matter to change to something new

Front 28

Particles that make up matter are in a state of __________.

Back 28

Constant motion

Front 29

When a warm object is brought near a cool object, the cool object will __________.

Back 29

Warm up

Front 30

A gas __________ fills its container.

Back 30

Completely

Front 31

The physical state of a type of matter depends mostly upon how its __________ are arranged and how they move.

Back 31

Atoms and molecules

Front 32

Different objects don't heat at the same rate because they have different __________.

Back 32

Specific heats

Front 33

The net upward force caused by the displaced fluid is ___________.

Back 33

Buoyant Force

Front 34

Solids made up particles of matter arranged in repeating geometric patterns are __________.

Back 34

Geometric solids

Front 35

The energy of moving particles is called _________.

Back 35

Kinetic energy

Front 36

If an object's density is less than that of the fluid it is in, it will __________.

Back 36

Float

Front 37

When the attractive forces holding particles together are strong enough to hold them together as a group, but not fixed position, they form a __________.

Back 37

Liquid

Front 38

The __________ remains constant when a liquid reaches its boiling point.

Back 38

Temperature

Front 39

A liquid to a gas is __________.

Back 39

Vaporiztion/Boiling Point

Front 40

A gas to liquid is __________.

Back 40

Condensation

Front 41

A liquid to a solid is __________.

Back 41

Freezing point

Front 42

A solid to a gas is __________.

Back 42

Sublimation

Front 43

A solid to a liquid is __________.

Back 43

Melting point

Front 44

A gas to a solid is _________.

Back 44

Deposition

Front 45

__________ can be used to identify unknown compounds and elements.

Back 45

Density

Front 46

The states if matter are __________, solid, gas, and plasma.

Back 46

Liquid

Front 47

Density is __________ property.

Back 47

Size-independent

Front 48

Acids have a pH of __________.

Back 48

Between 0 and 7

Front 49

Bases have a pH of __________.

Back 49

Between 7 and 14

Front 50

Crushing a leaf causes a __________.

Back 50

Physical change

Front 51

A burning candle is an example of a _________.

Back 51

Chemical change

Front 52

A sign that a __________ has occurred is the release or absorption of energy.

Back 52

Chemical change

Front 53

When rocks are crushed, a __________ has occurred.

Back 53

Physical Change

Front 54

What is the formula for calculation Density?

Back 54

Density = Mass / Volume

Density equals mass divided by volume