Physical Science

Front 1

A long coil of wire with many loops is called an:

Back 1

SOLENOID

Front 2

What is a characteristic property of an element

Back 2

BOILING POINT

Front 3

An electromagnet is weakened by

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DECREASING THE CURRENT

Front 4

The density of an object with a mass of 25 grams and volume of 5 ml is:

Back 4

5 g/ml

Front 5

An unchanging measurement of the amount of matter an object contains is its:

Back 5

DENSITY

Front 6

Matter is what:

Back 6

THE STUFF THAT MAKES UP EVERYTHING IN THE UNIVERSE

Front 7

What are the three principal states of matter:

Back 7

SOLIDS
LIQUIDS
GASES

Front 8

Characteristic property:

Back 8

Is a property that always holds true for a particular kind of matter.

Front 9

For a given substance, characteristic properties never change:

Back 9

They can be used to identify unknown matter.

Front 10

Boiling point is the temperature at which?

Back 10

Liquid Boils

Front 11

Boiling point is a what type of property:

Back 11

Characteristic

Front 12

Chemical Changes occur:

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When one or more substances combine or break apart to form a new substance.(example heating sugar changes it to caramel)

Front 13

The ability of a substance to undergo a specific chemical change is called:

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CHEMICAL ACTIVITY

Front 14

Matter can be classified into two general categories:

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Mixtures and Pure substances. The pure substances include elements and compounds.

Front 15

A "________" consists of two or more substances that are in the same place but are not chemically combined.

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MIXTURE

Front 16

A "________" is the best mixed of all possible mixures:

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SOLUTION

Front 17

A "_________" is made of only one kind of matter and has definite properties.

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PURE SUBSTANCE

Front 18

"_________" are pure substances that cannot be broken down into other substances by any physical or chemical means:

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ELEMENT

Front 19

A "__________" is a pure substance made of two or more elements that are chemically combined.

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COMPOUND

Front 20

Compounds always have properties that are "_______" from the properties of the elements that formed them. Water is an example of a compound.

Back 20

DIFFERENT

Front 21

An importanat characteristic property of matter is its "______".

Back 21

DENSITY

Front 22

Density relates to what two items of a object:

Back 22

MASS
and
VOLUME

Front 23

To calculate the density of a sample, divide its "____" by its "______"

Back 23

MASS by its VOLUME

Density = Mass/Volume

Front 24

A typical unit of density is written as:

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g/cm3 which is read as grams per cubic centimeter

Front 25

For liquids, density is often given in :

Back 25

grams per milliliter or g/mL

Front 26

Ice Floats in in Liquid Water because:

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Ice is less dense than water

Front 27

What is the density of a object that has a mass of 10mg and a volume of 5 mL

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=10mg/5mL

2 mg/mL

Front 28

An "_________" is a substance that cannot be broken down into any other subtances by chemical or phyiscal means:

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ELEMENT

Front 29

A " ______" is a substance made of two or more elements chemically combined in a specific ratio or proportion.

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COMPOUND

Front 30

A "_____" is a well mixed mixture, like salt water.

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SOLUTION

Front 31

"_______" is the study of the properties of matter and how matter changes.

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CHEMISTRY

Front 32

PHYSICAL CHANGE

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A change that alters the form or appearance of a material but does not make the material into something different.

Front 33

CHEMICAL CHANGE

Back 33

A change in matter that produces new substances is call CHEMICAL CHANGE

Front 34

A chemical change is like :

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scrambling the letters of a word to make new words

Front 35

One way to detect chemical reactions is to observe changes in the properties of the matter. Such as:

Back 35

Might see bubbles in a liquid when gas is produced. Or a solid may appear when solutions are mixed.

Front 36

A solid that forms from solution during a checical reaction is called a :

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PRECIPITATE

Front 37

The smallest particle of a element is a "____".

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ATOM

Front 38

What is the combination of two or more atoms?

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MOLECULE

Front 39

CHEMICAL BOND

Back 39

Is the force that holds atoms together.

Front 40

Chemical reactions occur when chemical bonds are "_______"

Back 40

either formed or broken apart

Front 41

A state of matter that has a definite shape or volume.

Back 41

SOLID
example: Rock, Pencil, Desk

Front 42

No Definite shape and definite volume

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LIQUID
example: water, soda Lemonade

Front 43

No definite shape and no definite volume

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GAS
example: steam, fog

Front 44

Substance in which the component are not evenly mixed:

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HETEROGENEOUS
example: salads, rock, graphite

Front 45

Substance in which the component are evenly mixed:

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HOMOGENEOUS
example: paint, milk

Front 46

Mixture in which particles are mixed but not dissolved

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COLLOIDS
example: Jellow, mayo, milk

Front 47

Mixture in which some particles settle out:

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SUSPENSION
example: water, dust, air

Front 48

Well mixed mixtures in which particles are small and dissolved

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SOLUTIONS
example: salt water, juice, tea

Front 49

ELEMENTS cannot be broken into other substances by chical or physical means:

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Example: iron, copper, oxygen

Front 50

COMPOUNDS A substance made of two or more elements chemically combined

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Example: water, carbon dioxide, table sugar

Front 51

A bicycle left out in the rain begins to rust is a Chemical or Physical Change.

Back 51

CHEMICAL

Front 52

A copper wire is cut into five smaller pieces is a Chemical or Physical Change.

Back 52

PHYSICAL CHANGE

Front 53

A match burns, leaving only a charred stick of wood is a Chemical or Physical Change.

Back 53

CHEMICAL

Front 54

Antifreeze is added to a car radiator to lower the freezing point is a Chemical or Physical Change.

Back 54

PHYSICAL CHANGE

Front 55

Leaves of a maple tree turn bright red as winter approaches is a Chemical or Physical Change.

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CHEMICAL