Chemistry Vocab

Question 1

Law of Conservation of Matter

Answer 1

States that matter can be neither created nor destroyed during a chemical reaction. The mass of the products is always the same as the mass of the reactants.

Question 2

matter

Answer 2

any substance that occupies space and has mass

Question 3

molecule

Answer 3

A particle made of two more atoms bonded together

Question 4

Phases of Matter

Answer 4

The states in which matter can exist; solid, liquid or gas.

Question 5

Solid

Answer 5

State of matter that has a definite shape and volume.

Question 6

Liquid

Answer 6

State of matter with a definite volume but no definite shape; it takes the shape of the container.

Question 7

Gas

Answer 7

State of matter with no definite volume or shape; it takes the shape and volume of its container.

Question 8

Plasma

Answer 8

the fourth state of matter

Question 9

Evaportaton

Answer 9

the process of turning a liquid to vapor

Question 10

condensation

Answer 10

The process of turning a vapor into a liquid

Question 11

melting

Answer 11

the process of turning a solid into a liquid using heat

Question 12

freezing

Answer 12

the process of turning a liquid into a solid

Question 13

sublimation

Answer 13

a solid turns into a gas without going through a liquid stage

Question 14

deposition

Answer 14

a gas turning into a solid without going through a liquid stage

Question 15

atom

Answer 15

smallest particle of an element that still has the properties of that element

Question 16

element

Answer 16

a pure substance that cannot be broken down into simpler substances by normal chemical processes

Question 17

pure substance

Answer 17

matter that has the same properties and composition throughout

Question 18

mixture

Answer 18

a combination of diffeen substances in which the component elements are individually distinct

Question 19

compound

Answer 19

pure substance formed when two or more chemical elements are chemically bonded together

Question 20

heterogeneous mixture

Answer 20

a combination of substances that does not have a uniform composition and properties

Question 21

homogeneous mixture

Answer 21

a combination of substances that has uniform composition and properties

Question 22

solubiliy

Answer 22

describing how well it dissolves in another substance

Question 23

soluble

Answer 23

a substance that has the ability to be dissolved

Question 24

solution

Answer 24

a mixture in which solute has dissolved and dispersed throughout a solvent

Question 25

solvent

Answer 25

the chemical that dissolves a solute when forming a solution

Question 26

solute

Answer 26

the chemical that is dissolving by a solvent when forming a solution

Question 27

Density

Answer 27

The amount of matter in defined volume.

Question 28

Mass

Answer 28

Measure of the amount of matter in an object.

Question 29

Volume

Answer 29

The amount of space an object occupies.

Question 30

Physical property

Answer 30

A measurable characteristic (size, shape, or state) of matter not involving interactions with other substances (as color, hardness, boiling point).

Question 31

Chemical property

Answer 31

A characteristic of a substance that describes its potential to change when interacting with other substances (reactivity with air or water, combustibility, flammability).

Question 32

Physical change

Answer 32

A type of change in which the form of matter is altered but one substance is not transformed to another

Question 33

Chemical change

Answer 33

Process where one or more substances are altered into new and different substances.

Question 34

Melting point

Answer 34

Temperature at which a solid substance becomes a liquid.

Question 35

Boiling point

Answer 35

Temperature at which a liquid substance becomes a gas.

Question 36

Acid

Answer 36

A chemical substance that produces hydrogen ions in solution and tastes sour.

Question 37

Base

Answer 37

A chemical substance that produces hydroxide ions in solution and tastes bitter.

Question 38

Acidity

Answer 38

The readiness of a substance to produce hydrogen ions.

Question 39

Alkalinity

Answer 39

The readiness of a substance to produce hydroxide ions.

Question 40

Basicity

Answer 40

Capacity of an acid to react with a base, measured by the number of hydrogen atoms that can be replaced by a base.

Question 41

Combustibility

Answer 41

Property of a substance defining how easily it ignites and burns.

Question 42

Reactivity

Answer 42

Property of a substance relating to how easily it reacts with other substances.

Question 43

Chemical reaction

Answer 43

Combining substances so that new substances are formed that are not separated by normal chemical means. The new substances have properties different from those of the original substances.

Question 44

Precipitate

Answer 44

A solid substance that forms from a chemical reaction that takes place in a liquid solution.

Question 45

Endothermic

Answer 45

Chemical reaction in which thermal energy is absorbed.

Question 46

Exotermic

Answer 46

Chemical reaction in which thermal energy is released.

Question 47

Ph

Answer 47

Measure of acidity or basicity of a substance

Question 48

Shape

Answer 48

The external feature of a substance

Question 49

Odor

Answer 49

The characteristics smell of substance

Question 50

Magnetism

Answer 50

The characteristics ob being able to attract because of an electrical force

Question 51

Conductivity

Answer 51

The ability to produce electricity

Question 52

Viscosity

Answer 52

The characteristics of a slow moving sticky substance

Question 53

Malleability

Answer 53

The ability to be hammered or pressed down

Question 54

Ductility

Answer 54

The ability to be drawn out into thin wires

Question 55

Oxidation

Answer 55

The ability to rust do to oxygen