Chemistry

Question 1

Change of state

Answer 1

A physical change from one state to another

Question 2

Compression

Answer 2

A external force that decreases the space between particles, causing it to occupy a smaller space/volume

Question 3

Condense

Answer 3

The physical change from gas to liquid

Question 4

Contract

Answer 4

Particles moving closer and taking up smaller volume

Question 5

Density

Answer 5

The mass of a substance divided by its volume to measure how close the particles in a substance are (measured in g/cm cubed or g/mL)

Question 6

Evaporate

Answer 6

The physical change from liquid to gas

Question 7

Expand

Answer 7

Particles moving apart, and taking up a bigger volume

Question 8

Matter

Answer 8

Matter is anything that has mass and takes up volume

Question 9

Melt

Answer 9

The physical change from solid to liquid

Question 10

Property

Answer 10

A specific characteristic of a substance for example volume it takes up shape it takes melting point

Question 11

Reverse sublimation

Answer 11

The physical change from gas to solid

Question 12

Solidify/freeze

Answer 12

The physical change from a liquid to solid

Question 13

State of matter

Answer 13

Solid liquid or gas

Question 14

Sublimation

Answer 14

The physical change from a solid to gas

Question 15

Volume

Answer 15

The space of substance occupies measured in centimeters cubed, mL or L

Question 16

Atom

Answer 16

Smallest complete particle of matter

Question 17

Atomic number

Answer 17

The number of protons in an atom

Question 18

Chromatography

Answer 18

A separation technique used to separate soluble particles based on their size or attractions

Question 19

Compound

Answer 19

Pure substance made up of two or more types of atoms chemically join together

Question 20

Concentration

Answer 20

The number of particles in a given volume

Question 21

Concentrated solution

Answer 21

A solution with a high number of solute particles dissolved in a given volume of solvent

Question 22

Dilute solution

Answer 22

A solution with a low number of solute particles dissolved in a given volume of solvent

Question 23

Distillation

Answer 23

Separation technique to separate two liquids based on their boiling point

Question 24

Electron configuration

Answer 24

The arrangement of electrons in their shells

Question 25

Element

Answer 25

Pure substance made up of only one type of atom

Question 26

Evaporation

Answer 26

Separation technique to separate a soluble solid from a solution

Question 27

Filtering

Answer 27

Separation technique to separate an insoluble solid from a liquid

Question 28

Impure substance

Answer 28

A mixture of two or more particle types

Question 29

Insoluble

Answer 29

As a substance that does not dissolve in given solvent

Question 30

Magnetic

Answer 30

Separation technique to separate a magnetic substance from a non-magnetic substance

Question 31

Mass number

Answer 31

The total number of protons and neutrons in an atoms nucleus

Question 32

Mixture

Answer 32

An impure substance made up of more than one type of particle, not chemically bond together

Question 33

Particle

Answer 33

A small particle of matter general term to describe a small unit in chemistry, for example, atom, compound, electron

Question 34

Periodic table

Answer 34

Table which organises elements based on their atomic number and properties

Question 35

Pure substance

Answer 35

A substance made of only one type of particle (element or a compound)

Question 36

Saturated solution

Answer 36

A solution that cannot dissolve any more solute

Question 37

Soluble

Answer 37

A substance that can dissolve a solvent ( usually water)

Question 38

Solute

Answer 38

The substance, often a solid, that is dissolved in the solvent

Question 39

Solution

Answer 39

A solute dissolved in a solvent that makes a mixture

Question 40

Solvent

Answer 40

The liquid that will dissolve a solute

Question 41

Subatomic particle

Answer 41

Small particles that make up an atom for example electron, proton, neutron

Question 42

Valence shell

Answer 42

The furthest shell from the nucleus with electrons in it