Matter

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

chromatography

Answer 4

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

Question 5

combustibility

Answer 5

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

Question 6

compound

Answer 6

any substance formed from two or more elements that have been joined together chemically.

Question 7

condensation

Answer 7

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

Question 8

crystallization

Answer 8

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

Question 9

density

Answer 9

the amount of mass per unit volume.

Question 10

deposition

Answer 10

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

Question 11

distillation

Answer 11

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

Question 12

enthalpy

Answer 12

the amount of heat in a system at constant pressure.

Question 13

evaporation

Answer 13

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

Question 14

filtration

Answer 14

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

Question 15

flammability

Answer 15

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

Question 16

freezing

Answer 16

when a liquid turns into a solid.

Question 17

freezing point

Answer 17

the temperature at which a liquid turns into a solid.

Question 18

heterogeneous mixture

Answer 18

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

Question 19

homogeneous mixture

Answer 19

homogeneous mixture

Question 20

intermolecular force

Answer 20

any force that can hold or repel particles.

Question 21

malleability

Answer 21

how readily a material’s shape can be changed.

Question 22

matter

Answer 22

anything that has mass and takes up space.

Question 23

melting

Answer 23

when a solid turns into a liquid.

Question 24

melting point

Answer 24

the temperature at which a solid turns into a liquid.

Question 25

mixture

Answer 25

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

Question 26

phase change

Answer 26

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 27

physical change

Answer 27

a change which alters a substance without altering its composition.

Question 28

physical property

Answer 28

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 29

reactivity

Answer 29

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

Question 30

solution

Answer 30

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

Question 31

sublimation

Answer 31

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

Question 32

temperature

Answer 32

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

Question 33

vaporization

Answer 33

the phase change from liquid to gas.