Classification, Changes, State of Matter

Question 1

what are the two (2) classifications of matter?

Answer 1

(1) pure substance
(2) mixtures

Question 2

under pure substance (2)

Answer 2

elements
compounds

Question 3

under mixtures (2)

Answer 3

homogeneous
heterogeneous

Question 4

have a distinct physical and chemical properties/can be elements or compounds

fixed composition

Answer 4

substance

Question 5

made up of only 1 type of atom

ex: hydrogen (H)
carbon (C)

Answer 5

elements

Question 6

made up of 2 or more elements

water (H2O)
carbon dioxide (Co2)
methane (CH4)

ex: table salt (NaCi)

Answer 6

compounds

Question 7

made up of 2 or more pure substances

can be homogeneous or heterogeneous

Answer 7

mixtures

Question 8

same (also known as solution)

Answer 8

homogeneous

Question 9

many

Answer 9

heterogeneous

Question 10

what are the three (3) homogeneous classifications?

Answer 10

• gas - gas; air
• liquid - liquid; vinegar
• solid - solid; alloy

Question 11

what are the two (2) phases or composition of heterogeneous classifications?

Answer 11

• suspensions
• colloids

Question 12

solid to liquid

Answer 12

melting

Question 13

liquid to solid

Answer 13

freezing

Question 14

liquid to gas

Answer 14

evaporation

Question 15

gas to liquid

Answer 15

condensation

Question 16

solid to gas

Answer 16

sublimation

Question 17

gas to solid

Answer 17

deposition

Question 18

measure the amount of mass in a given amount of volume

Answer 18

density

Question 19

describe how it feels like smooth, hard, and rough

Answer 19

texture

Question 20

examples of chemical property

Answer 20

reactivity with water
oxidation

Question 21

what property can be observed without changing/does not change the composition of the substance?

Answer 21

physical property

Question 22

what property depends upon the amount of substance?

Answer 22

extensive property

Question 23

what property can be observed when a substance is reacting with something else?

Answer 23

chemical property

Question 24

what characteristic does not depend upon the amount of a substance?

Answer 24

intensive property

Question 25

can be separated by physical means

Answer 25

mixtures

Question 26

cannot be separated by physical means

Answer 26

substance