Science chemistry

Question 1

Chemistry

Answer 1

the study of matter, it’s composition, and its interactions

Question 2

Matter

Answer 2

Everything, anything with mass (amount of matter) and volume (space it takes up)

Question 3

Atom

Answer 3

Smallest unit of matter, cannot be broken down.

Question 4

Element

Answer 4

A type of atom, a pure substance that cannot be broken down

Symbols are either 1 capital letter or 1 capital and a lowercase letter

Question 5

Chemical Bond

Answer 5

The link between two atoms, holding them together

Question 6

Substance

Answer 6

Something you cannot break into simpler parts using physical changes
Molecules and compounds

Question 7

Molecule

Answer 7

A combination of two or more atoms.

Question 8

Compound

Answer 8

Two or more elements chemically combined
Elements are in specific amounts as seen in their chemical formula (ex. H₂O)
Can only be broken down with chemical reactions

Question 9

Mixture

Answer 9

Two or more substances physically combined in any amounts
They do not change chemically
Heterogeneous and homogeneous mixtures

Question 10

Heterogeneous Mixture

Answer 10

Two or more substances that aren’t evenly mixed, you can see different parts

Question 11

Homogeneous Mixture

Answer 11

Two or more substance that are evenly mixed, you cannot see different parts, a solution

Question 12

Solution

Answer 12

A homogeneous mixture.

Question 13

Solute

Answer 13

Substance that gets dissolved.

Question 14

Solvent

Answer 14

Substance that does the dissolving
*universal solvent is water

Question 15

Physical Properties

Answer 15

Any characteristic that can be observed using your 5 senses without changing the substance

Question 16

Chemical Properties

Answer 16

Any characteristic that describes how matter interacts with another substance

Question 17

Biological Property

Answer 17

The characteristic of having all 9 features of living things

Question 18

Physical Change

Answer 18

The characteristic of having all 9 features of living things

Question 19

Chemical Change

Answer 19

Change to the chemical properties of matter, substance is changed into a new substance with new properties, cannot change back

Question 20

Law of Conversation of Matter / Mass

Answer 20

Matter cannot be created nor destroyed,
The number of atoms/mass of the reactants equals the number of atoms/mass of the products.

Question 21

Phase/State of Matter

Answer 21

solid, liquid, and gas
Changed by changing temperature or pressure

Question 22

Solid

Answer 22

Definite shape & definite volume
Particles packed together and vibrate but have fixed positions
Lower energy

Question 23

Liquid

Answer 23

No definite shape but has definite volume
Particles spread apart
Medium energy

Question 24

Gas

Answer 24

No definite shape & no definite volume
Particles spread far apart
High energy

Question 25

Melting

Answer 25

matter changing from solid to liquid
⬆ energy, ⬆ particle movement
melting point= temperature substance melts at

Question 26

Freezing/Solidification

Answer 26

matter changing from liquid to solid
⬇ energy, ⬇ particle movement
freezing point= temperature substance freezes at

Question 27

Vaporization/Evaporation

Answer 27

matter changing from liquid to gas
⬆ energy, ⬆ particle movement
Boiling point= temperature substance turns to gas at

Question 28

Condensation

Answer 28

matter changing from gas to liquid
⬇ energy, ⬇ particle movement

Question 29

Sublimation

Answer 29

matter changing from solid to gas
⬆ energy, ⬆ particle movement

Question 30

Deposition

Answer 30

matter changing from gas to solid
⬇ energy, ⬇ particle movemen