Bju Physical Science Chapter 2

Front 1

Matter

Back 1

Anything that occupies space and has mass

Front 2

Kinetic-molecular Model of matter

Back 2

Tiny particles in random constant motion make up matter

Front 3

Atom

Back 3

The basic particle that makes up all matter

Front 4

Proton, neutron, nucleus, Electron

Back 4

The four parts of the atom

Front 5

Positive

Back 5

Protons are

Front 6

Neutral(no charge)

Back 6

Neutrons are

Front 7

Negative

Back 7

Electrons are

Front 8

Electrons

Back 8

Which part of the atom takes up space

Front 9

Molecule

Back 9

A distinct particle formed when two or more atoms bond together or become separate

Front 10

Ions

Back 10

Particles with either more or fewer electrons than protons are

Front 11

Anion

Back 11

Particles with more electrons than protons

Front 12

Cation

Back 12

Atoms with fewer electrons than protons

Front 13

Neutral

Back 13

The ideal atom is

Front 14

Subatomic

Back 14

Any particle smaller than an atom

Front 15

Brownian Motion

Back 15

Movement of bits of matter in liquid and gasses

Front 16

Pure substances

Back 16

Materials made of only one kind of substance

Front 17

Element

Back 17

Simplest kind of pure substance made of only one atom

Front 18

Compound

Back 18

Contains more than one atom, chemically bonded together

Front 19

Lattice

Back 19

Masses of ions arranged in a geometric pattern

Front 20

Organic Compound

Back 20

Always contain the element carbon

Front 21

Mixture

Back 21

Mixing of two or more substances

Front 22

Homogeneous mixtures

Back 22

A mix of Particles of roughly the same size and even mix

Front 23

Solutions

Back 23

Homogeneous mixtures of gas or liquid are called

Front 24

Heterogenous Mixture

Back 24

Mixtures that are not uniform

Front 25

Physical property

Back 25

Anything about a substance that we can observe or measure without changing its chemical composition

Front 26

Physical change

Back 26

Any change in the arrangement of matter in a substance

Front 27

Nuclear change

Back 27

Occurs when the nucleus split into smaller nuclei

Front 28

Chemical changes

Back 28

Occurs when atoms of different substances break apart and combine in new ways

Front 29

Law of the conservation of matter

Back 29

Matter can neither be created or destroyed but only changed from one form to another

Front 30

Change of state

Back 30

When matter changes from one form to another it is called

Front 31

Thermal Energy

Back 31

Related to the microscopic vibrations and motions of particles in matter

Front 32

Hot

Back 32

When more thermal energy is present an object is

Front 33

Cooling

Back 33

A loss of thermal energy is

Front 34

Melting

Back 34

When there is an addition of thermal energy so that the attraction between the particles cannot hold together anymore

Front 35

Freezing

Back 35

When the liquid cools making the attraction between the particles strong enough to hold the item in a fixed spot

Front 36

Evaporation

Back 36

Happens at any temperature between boiling and melting and only at the surface

Front 37

Sublimation

Back 37

Happens between the solid and vapor phase at temperatures below the melting point and at the surface

Front 38

Condensation

Back 38

Occurs when a vapor cools and changes into the liquid state

Front 39

Deposition

Back 39

Occurs when the rate of vapor molecules exceed the number sublimating away

Front 40

Solid

Back 40

Objects that have definite volume definite shape are dense have low compressibility Vibrate in fixed positions have a repeating structure or are fixed but random

Front 41

Liquid

Back 41

Has definite volume but is not rigid

Front 42

Gas

Back 42

Has no definite volume and is highly conpressible

Front 43

Kinetic-molecular model

Back 43

The most workable model for matter

Front 44

Plasma Gas Liquid Solid

Back 44

Four states of matter

Front 45

Melting

Back 45

Phase change: Solid——> Liquid

Front 46

Mass and volume

Back 46

Matter has what two characteristics

Front 47

False

Back 47

T/F Molecules always have the same size and shape

Front 48

Three

Back 48

Water can exist in how many states

Front 49

Both

Back 49

Kevlar’s strength is chemical or physical

Front 50

Gas

Back 50

Which state of matter is the fastest

Front 51

True

Back 51

Table salt is a pure substance

Front 52

Diffusion

Back 52

The gradual spreading of a substance through matter

Front 53

Gold, sodium, chlorine

Back 53

Three examples of elements

Front 54

Nucleus

Back 54

Which part of an atom takes up the most mass

Front 55

Tap Water, Air

Back 55

Two examples of homogenous mixtures

Front 56

Granite, gravel

Back 56

Two examples of heterogeneous mixtures

Front 57

Electron field

Back 57

Which part of an atom takes the most space

Front 58

Lemon aid, blood, cake

Back 58

Examples of mixtures

Front 59

Light, microwave

Back 59

Examples of non-matter

Front 60

Nanometer

Back 60

We measure particles in what meter

Front 61

H2O

Back 61

Give an example of a molecule

Front 62

Naming the animals

Back 62

How did Adam express classification

Front 63

Element Compound

Back 63

Two types of pure substances

Front 64

Heterogenous Homogenous

Back 64

Two types of mixtures