classification of matter

Question 1

what are the 2 categories of matter

Answer 1

mixture & pure substance

Question 2

which category does the element & compound belong to?

Answer 2

pure substance

Question 3

the mixture category includes what 2 parts?

Answer 3

heterogeneous mixture & homogeneous mixture

Question 4

what is the global term for substance with a definite composition?

Answer 4

chemical

Question 5

what is mass?

Answer 5

the amount of matter

Question 6

what is anything with mass & volume?

Answer 6

matter

Question 7

what is the amount of 3 dimensional space an object occupies called?

Answer 7

volume

Question 8

what part of an element is the chemical identity?

Answer 8

number of protons

Question 9

what parts of elements are smaller than atoms, but not part of the element identity?

Answer 9

protons, neutrons, electrons

Question 10

what is an element?

Answer 10

a pure substance which cannot be broken down into simple stable substances

Question 11

can a compound or element be broken down into simple stable substances?

Answer 11

compound

Question 12

what is a compound?

Answer 12

substance that can be broken down into simple stable substances

Question 13

how many atoms makes an element?

Answer 13

1

Question 14

how are compounds made?

Answer 14

atoms of 2+ elements that are chemically bonded

Question 15

if you can go back to the original substance what change is this?

Answer 15

physical

Question 16

if you cannot go back to the original substance what change is this?

Answer 16

chemical

Question 17

what is it called when atoms rearrange to form new substances?

Answer 17

chemical change

Question 18

what are 8 physical properties?

Answer 18

1. luster
2. malleable
3. hardness
4. melting & boiling point
5. electrical conductivity
6. ductile
7. density
8. solubility

Question 19

what is the scientific term for dissolving?

Answer 19

solubility

Question 20

what does luster mean?

Answer 20

shiny

Question 21

what does malleable mean?

Answer 21

to be able to hammer or press it firmly

Question 22

what does ductile mean?

Answer 22

can be drawn out into a thin wire

Question 23

what are 6 chemical properties?

Answer 23

1. flammable
2. radioactive
3. corrosive
4. toxicity
5. pH levels
6. reactivity

Question 24

what does corrosive mean?

Answer 24

solids, mainly metals, are eaten away as a result of oxidation

Question 25

what is rusting?

Answer 25

rusting is the oxidation of something due to the air and moisture

Question 26

what is the difference between rusting and corrosion?

Answer 26

rusting is due to air & moisture, corrosion is due to oxidation

Question 27

what is intensive property?

Answer 27

it doesn't matter how much substance there is

Question 28

what are 4 examples of intensive properties?

Answer 28

1. density 2. boiling & melting point 3. viscosity 4. color

Question 29

what is viscosity?

Answer 29

measure of somethings resistance to change its shape/movement

Question 30

what is extensive property?

Answer 30

it does depend on how much substance there is

Question 31

what are 3 examples of extensive property?

Answer 31

1. mass 2. length 3. volume

Question 32

what are 5 intensive physical properties?

Answer 32

1. color 2. odor 3. luster 4. freezing & boiling point 5. malleability

Question 33

what are 2 examples of extensive physical properties?

Answer 33

1. density 2. volume

Question 34

a change in state is what type of change?

Answer 34

physical

Question 35

a change in composition is what type of change?

Answer 35

chemical

Question 36

a change in shape is what kind of change?

Answer 36

physical

Question 37

do both physical and chemical changes involve energy changes?

Answer 37

yes

Question 38

when a substance breaks down into its elements, what kind of change is this?

Answer 38

chemical