Chapter 1 Matter And Classification

Front 1

Type of matter that has same composition throughout

Back 1

Pure substance

Front 2

Two or more pure substances together are called a

Back 2

Mixture

Front 3

Two types of pure substances:

Back 3

Elements and compounds

Front 4

A mega is

Back 4

10e6

1,000,000 g

Front 5

A micro is

Back 5

10e -6

.000001g

Front 6

Describes the composition of a compound using the symbols for the elements in the compound:

Back 6

Chemical formula

Front 7

A mixture that is uniform throughout

Back 7

Homogeneous

Front 8

A mixture that is not uniform throughout

Back 8

Heterogeneous

Front 9

It is possible to separate _____ into their component substances

Back 9

Mixtures

Front 10

When matter cannot be physically separated it is a:

Back 10

Pure substance

Front 11

When matter can be physically separated it is a

Back 11

Mixture

Front 12

If a pure substance can be chemically decomposed it is an:

Back 12

Element

Front 13

If an element can conduct electricity it is a:

Back 13

Metal

Or graphite

Front 14

A form that matter can take is called it’s:

Back 14

Physical state

Front 15

Three physical states:

Back 15

Solid

Liquid

Gas

Front 16

A solid has a ______ shape

Back 16

Fixed

Front 17

A liquid has no _____ shape

Back 17

Fixed

Front 18

A liquid’s particles are not:

Back 18

Arranged in ordered structures

Front 19

A gas is easily

Back 19

Compressed

Front 20

A ______ property can be observed/measured without changing the composition of the substance

Back 20

Physical

Front 21

7 Physical properties

Back 21

Odor taste hardness

Mass Volume Density

Temperature

Front 22

The ratio for converting between grams and pounds is

Back 22

1 lb / 453.6g

Or

453.6g /1lb

Front 23

Convert grams to pounds:

Back 23

Weight lbs=

X grams * 1lb/453.6g

Front 24

Convert mg to g ratio

Back 24

1000mg / 1g

Front 25

A physical change will not alter a substance’s:

Back 25

Chemical composition

Front 26

When a substance goes directly from a solid to a gas state

Back 26

Sublimation

Front 27

Crumpling paper is a

Back 27

Physical change

Front 28

Melting ice is a ______ change.

Back 28

Physical

Front 29

Evaporation (l) ——> (g) is a ______ change.

Back 29

Physical

Front 30

A direct change from gas state to solid is called:

Back 30

Deposition

Front 31

Changing state from liquid to gas is called

Back 31

Evaporation

Front 32

Bending wire is a _______ change

Back 32

Physical

Front 33

When substances convert to new substances it is a ______ change

Back 33

Chemical

Front 34

When Hard boiling an egg it undergoes a ________ change.

Back 34

Chemical

Front 35

Rusting, oxidation, corrosion, tarnish are all this type of change:

Back 35

Chemical

Front 36

A chemical change can be noted by a change in:

Back 36

Color

Front 37

Chemical properties are “can or could” possibilities of the change a substance can undergo such as:

Back 37

Reactivity and flammability

Front 38

Kinetic energy is energy

__ _______.

Back 38

In motion

Front 39

Potential energy is energy that is

Back 39

Positional, poised, unreleased

Front 40

A tentative explanation which accounts for a set of observations that is data based and can be tested is a ________

Back 40

Hypothesis

Front 41

The “how” of a scientific method:

Back 41

Hypothesis

Front 42

According to the scientific method a universally valid, consistent rule of behavior of matter is a ______.

Back 42

Law

Front 43

The scientific method explains observations, hypotheses and laws by developing a _______

Back 43

Theory

Front 44

The “why” of the scientific method:

Back 44

Theory

Front 45

The mass number formula is:

Back 45

A = Z + N

Front 46

The Z in mass number is the number of:

Back 46

Protons

Front 47

The N in mass number is the number of

Back 47

Neutrons

Front 48

The superscript number of an element represents:

Back 48

Z Protons

Front 49

The subscript number of an element represents:

Back 49

A = Z + N. the sum of protons and neutrons

Front 50

An isotope is an elemental atom which contains a different _____ count from the periodic table.

Back 50

Neutron

Front 51

Carbon-14 is an ______ having ______neutrons instead of _____.

Back 51

Isotope,8,6

Front 52

A cation has a ______ charge because it has more ______ than ______.

Back 52

Positive, protons, electrons

Front 53

An anion has a _____ charge because it has more ______ than ________.

Back 53

Negative, electrons, protons

Front 54

Melting, vaporization, photosynthesis and sublimation are all _________ physical changes.

Back 54

Endothermic

Hint 54

Require input of energy

Front 55

Photosynthesis is an ________ process because it _______ sunlight energy to produce glucose and water.

Back 55

Endothermic

Absorbs

Front 56

Freezing, condensation and deposition are all ______ physical changes

Back 56

Exothermic

Front 57

The 5 types of kinetic energy

Back 57

Radiant, mechanical, thermal sound, electrical

Front 58

Energy stored in the bonds of molecules is _______ energy

Back 58

Chemical