matter vocabulary

Question 1

alloy

Answer 1

a homogeneous mixture of metals, or a mixture of a metal and a non-metal in which the metal is the major component.

Question 2

brittleness

Answer 2

a material’s ability to absorb energy before fracturing.

Question 3

chemical change

Answer 3

any change that results in the formation of a new chemical substance.

Question 4

chemical property

Answer 4

a characteristic of a substance that’s observed during a chemical reaction.

Question 5

chromatography

Answer 5

parts of a mixture are separated based on the ability of each dissolved component to travel through materials at different speeds.

Question 6

combustibility

Answer 6

occurs when a material catches fire at a temperature above 43 degrees celcius.

Question 7

condensation

Answer 7

the phase change that occurs when water vapor cools down to form liquid water.

Question 8

crystallization

Answer 8

the separation of a pure solid substance from a solution containing the dissolved substance.

Question 9

condensation point

Answer 9

the temperature at which a gas turns into a liquid at standard pressure.

Question 10

density

Answer 10

the amount of mass per unit volume.

Question 11

deposition

Answer 11

when a gas changes directly into a solid without going through the liquid phase.

Question 12

distillation

Answer 12

the process that separates homogenous mixtures based on the different boiling points of the substances.

Question 13

enthalpy

Answer 13

the amount of heat in a system at constant pressure.

Question 14

evaporation

Answer 14

occurs on the surface of a liquid as it changes into a gas.

Question 15

filtration

Answer 15

a physical process used to separate solids from liquids by passing them through a barrier.

Question 16

flammability

Answer 16

occurs when a material catches fire at a temperature below 43 degrees celcius.

Question 17

freezing

Answer 17

when a liquid turns into a solid

Question 18

freezing point

Answer 18

the point where a liquid turns into a solid

Question 19

heterogeneous mixture

Answer 19

a combination of two or more substances in which the original substances are separated into physical distinct regions.

Question 20

homogeneous mixture

Answer 20

a combination of two or more substances that have uniform composition and chemical properties throughout; also known as a solution.

Question 21

intermolecular force

Answer 21

any force that can hold and reflect particles

Question 22

malleability

Answer 22

how readily a materials shape can be changed

Question 23

matter

Answer 23

anything that has mass and takes up space

Question 24

melting

Answer 24

when a solid turns into a liquid

Question 25

melting point

Answer 25

the point at which a solid turns into a liquid

Question 26

mixture

Answer 26

a combination of two or more pure substances in which each pure substance retains its individual chemical properties.

Question 27

phase change

Answer 27

a special type of physical change in which a substance transitions among the states of matter, solid, liquid, and gas, but the chemical properties of the substance remain the same.

Question 28

physical change

Answer 28

a change which alters a substance without altering its composition.

Question 29

physical property

Answer 29

a characteristic that can be observed or measured without changing the chemical makeup of a substance. Types include color, odor, texture, boiling point, melting point, and density

Question 30

reactivity

Answer 30

the relative ability of a substance to undergo a chemical reaction.

Question 31

solution

Answer 31

a combination of two or more substances that have uniform composition and chemical properties throughout; also known as a homogeneous mixture.

Question 32

sublimation

Answer 32

when a solid transistions into a gas without going through the liquid phase.

Question 33

temperature

Answer 33

a measure of the random kinetic energy in a sample of matter.

Question 34

vaporization

Answer 34

the phase change from liquid to gas