Matter Unit 2 Vocabulary

Front 1

Solid

Back 1

Matter that is firm and stable in shape; not liquid or gas

Front 2

Liquid

Back 2

Matter that is flowing freely but has constant volume

Front 3

Gas

Back 3

Airlike fluid matter which moves freely to fill any space available

Front 4

Matter

Back 4

Anything that has mass and volume

Front 5

Atom

Back 5

The basic building block of all matter

Front 6

Physical Properties

Back 6

characteristics that can be observed without changing the substance

Front 7

Chemical Properties

Back 7

Properties that can only be observed by changing the original substance into a new one

Front 8

Luster

Back 8

The ability to reflect light

Front 9

Malleability

Back 9

The ability to reshaped

Front 10

Mass

Back 10

The amount of space something takes up

Front 11

Characteristic Properties

Back 11

A physical property that doesn't change based on amount of substance

Front 12

Magnetism

Back 12

Whether or not an object/subtance draw, pull, or repel objects or substances.

Front 13

Hardness

Back 13

the quality or condition of being hard

Front 14

Texture

Back 14

The feel or apperence of an object or subtance

Front 15

Boiling Point

Back 15

The temperature where liquid changes to gas

Front 16

Melting Point

Back 16

The temperature where solid becomes liquid; same temperature where the substance will freeze

Front 17

Flammability

Back 17

How easily a subtance/object can ignite

Front 18

Oxidation

Back 18

When exposed to oxygen they chemically react to form things

Front 19

pH

Back 19

How acidic or basic a substance is when dissolved in water

Front 20

Chemical Reaction

Back 20

process that involves changes in the structure and energy content of a subtance

Front 21

Subatomic

Back 21

Particles that are the smaller parts that make up an atom

Front 22

Nucleus

Back 22

The center of an atom made up of protrons and neutrons

Front 23

Orbital Shell

Back 23

The shells that the atoms orbit around the nucleus

Front 24

Valence Shell

Back 24

The outermost shell of the atom where the valence electrons orbit around in.

Front 25

Protron

Back 25

Positiviely charged: found IN the nucleus; mass of 1 atomic mass unit (amu)

Front 26

Neutron

Back 26

No Charge: found IN the nucleus; mass of 1 amu

Front 27

Electron

Back 27

Negatively Charged: found in the electron cloud, much smaller than protrons and nutrons.

Front 28

Atomic Bond

Back 28

When two or more elements chemically combine (go through a chemical change.

Front 29

Covalent Bond

Back 29

A bond that occurs between two or more non-metals share electrons

Front 30

Ionic Bond

Back 30

When an atom transfers an electron to another atom in order to become more stable and form a bond. Numbers of electrons lost must be equal as number of electrons gained.

Front 31

Hydrogen Bond

Back 31

When two hydrogen within a molecule or compound bond

Front 32

Exothermic

Back 32

A chemical reaction that make the surrounding area warmer and cause fire to the surrounding area.

Front 33

Endothermic

Back 33

A chemical reaction that absorbs heat, will make the surrounding air colder and may freeze the surrouding objects.

Front 34

Precipitate

Back 34

A substance formed from a chemical reaction.

Front 35

Catalyst

Back 35

A subtance whose purpose is to speed up a chemical reaction.

Front 36

Reactant

Back 36

A subtance that changes a chemical reaction.

Front 37

Product

Back 37

What's formed form a chemical reaction.

Front 38

Chemical Formulae

Back 38

Way of expressing chemical compounds using symbols and subscripts.