Matter (8th Grade Unit Test)

Question 1

Physical property

Answer 1

A property of matter that can be observed or measured without changing the identity of the matter

Question 2

Chemical property

Answer 2

A property of matter that describes a substance based on its ability to change into a new substance with different properties

Question 3

States of Matter

Answer 3

The physical forms when which a substance can exist: states include solid, liquid, gas, and plasma

Question 4

Solid

Answer 4

The state in which matter has a definite shape and volume

Question 5

Liquid

Answer 5

A state in which matter takes the shape of its container and has definite volume

Question 6

Gas

Answer 6

The state in which matter changes both in shape and volume

Question 7

Plasma

Answer 7

The state of matter that does not have a definite shape or volume and his particles a broken apart; plasma is composed of electrons in positively charged ions

Question 8

Element

Answer 8

A pure substance that cannot be separated or broken down by into simpler substances using physical or chemical means

Question 9

Pure Substance

Answer 9

A substance in which there is only one type of particle; includes elements and compounds

Question 10

Compound

Answer 10

A pure substance composed of two or more elements that are chemically combined

Question 11

Mixture

Answer 11

A combination of two or more substances that are not chemically combined

Question 12

Solution

Answer 12

A mixture that appears to be a single substance that is composed of particles of two or more substances that are distributed evenly amongst each other

Question 13

Solute

Answer 13

The substance that is dissolved to form a solution

Question 14

Solvent

Answer 14

The substance in which a solute is dissolved to form a solution

Question 15

Concentration

Answer 15

A measure of the amount of solute dissolved in a solvent

Question 16

Solubility

Answer 16

The ability to dissolve in another substance; more specifically, the amount needed to make a saturated solution using a given amount of solvent at a certain temperature

Question 17

Suspension

Answer 17

A mixture in which particles of the material or dispense throughout a liquid or gas but are large enough that they settle out

Question 18

Colloid

Answer 18

A mixture where the particles are dispersed throughout but are not heavy enough to settle out

Question 19

Kinetic Theory Of Matter

Answer 19

The theory that all matter is made up of tiny particles that are in constant motion

Question 20

Thermal Expansion

Answer 20

The increase in volume of a substance due to the increase in temperature

Question 21

Density

Answer 21

The amount of matter in a given space

Question 22

Atom

Answer 22

The smallest particle in which an element can be divided and still be the same substance

Question 23

Acid

Answer 23

Any compound that increases the number of hydrogen ions when dissolved in water and whose solution taste sour and can change the color of certain compounds

Question 24

Base

Answer 24

Any compound that increases the number of hydroxide ions when dissolved in water and who’s solution taste better, feel slippery, and can change the color of certain compounds

Question 25

Conductivity

Answer 25

A measure of the ability of a given substance to conduct electric current

Question 26

Organic compound

Answer 26

A covalent compound composed of carbon based molecules

Question 27

pH

Answer 27

Stands for: potential hydrogen. A measure of hydronium ion concentration in a solution; a pH of seven is neutral; pH less than seven is acidic; a pH greater than seven is basic

Question 28

Salt

Answer 28

An ionic compound formed from the positive ion of a base and a negative ion of an acid

Question 29

Combustibility/combustion

Answer 29

The burning of fuel; the process in which field combines with oxygen in a chemical change it produces thermal energy

Question 30

Reactivity

Answer 30

The relatives capacity of an Atom, molecule, or radical to undergo a chemical reaction with another Atom, molecule, or compound

Question 31

Acidity

Answer 31

The level of acid in substances (pH lower than 7)

Question 32

Basicity

Answer 32

The level of base in substances (pH higher than 7)

Question 33

What can be used to identify unknown substances?

Answer 33

Characteristic properties

Question 34

Give an example of a physical property

Answer 34

``` Shape Solubility Density Odor Melting Point Boiling Point Color ```

Question 35

Give an example of a chemical property

Answer 35

``` Acidity Basicity Combustibility Reactivity Flammability ```

Question 36

Volume

Answer 36

The amount of space taken up by an object

Question 37

Mass

Answer 37

The amount of matter in an object

Question 38

Are mass and weight the same or different?

Answer 38

DIFFERENT

Question 39

What is the difference between mass and weight?

Answer 39

Weight it the measure of gravitational force, and mass is the amount of matter in you.

Question 40

What is mass measured in?

Answer 40

Grams (g)

Question 41

Does your mass change on the moon?

Answer 41

No

Question 42

Does your weight change on the moon?

Answer 42

Yes

Question 43

How is density calculated

Answer 43

D= M/V | Density=Mass over Volume

Question 44

Characteristic properties are always the _____ whether the substance is big or small

Answer 44

Same

Question 45

Homogeneous mixture

Answer 45

The same appearance and properties throughout the mixture (solutions)

Question 46

Heterogeneous Mixture

Answer 46

Do not have the same appearance throughout in the components can be easily seen. (Suspensions and colloids)

Question 47

Is a solution homogeneous or heterogeneous?

Answer 47

HOMOGENEOUS

Question 48

Is a suspension homogeneous or heterogeneous?

Answer 48

Heterogeneous

Question 49

Is a colloid homogeneous or heterogeneous?

Answer 49

Heterogeneous

Question 50

Anything that takes up space is made of _____

Answer 50

Matter

Question 51

A ________ is a characteristic of matter

Answer 51

Property

Question 52

_________ properties describe how matter changes into a new matter

Answer 52

Chemical

Question 53

Color, shape, and texture are ________ properties

Answer 53

Physical

Question 54

Matter

Answer 54

Anything that has volume and mass

Question 55

________ is the amount of matter in an object

Answer 55

Mass

Question 56

The weight of objects is commonly measured on a ______

Answer 56

Scale

Question 57

_______ is the amount of space something takes up

Answer 57

Volume

Question 58

Volume can be measured in ________ or ___________________

Answer 58

Milliliters or cubic centimeters

Question 59

______is the amount of matter per unit of volume

Answer 59

Density

Question 60

Density equals mass divided by _______

Answer 60

Volume

Question 61

Which state of matter had surface tension

Answer 61

Liquid

Question 62

In Which state of matter do the particles vibrate in place?

Answer 62

Solid

Question 63

Which state of matter can be used in hydraulic systems

Answer 63

Liquid

Question 64

What is the SI Unit for expressing mass?

Answer 64

Kilogram