Quiz 1

Question 0

Compound

Answer 0

Pure substance
Has 2 or more elements w/ same proportions
Elements are chemically bound
Ex. CO2

Question 1

Element

Answer 1

A pure substance

Cant be broken down

Question 2

Pure substance

Answer 2

Substance w/ uniform composition

Either made of 1 type atom or 1 type molecule

Question 3

Mixture

Answer 3

Substance w/ two or more types of atoms/molecules w/ varying proportions

Question 4

Homogeneous

Answer 4

Uniform mixture
Single phase
Ex. Salt water

Question 5

Heterogeneous

Answer 5

Mixture that is not uniform
Multiple phase
Ex. Stew

Question 6

Physical property/change

Answer 6

Change/quality that can be observed w/o changing the chemical makeup/atoms of the substance
Can generally be reversed
Ex. Change of state

Question 7

Chemical property/change

Answer 7

Quality that changed chemical/atomic makeup of matter
Creates a new substance
Can’t be reversed
Evidence: change of color, odor, rust, etc

Question 8

Intensive property

Answer 8

Independent of number/amount

Doesn’t change when matter is added or subtracted

Question 9

Extensive property

Answer 9

Dependent of number/amount

Changes when matter is added or subtracted

Question 10

Quantitative

Answer 10

Measures something about a process
Numbers
Has units

Question 11

Qualitative

Answer 11

Describes characteristics
Describes how a process happens
Not a number

Question 12

Pure Substance or Mixture? Then classify

Carbon Dioxide

Answer 12

Pure substance

Compound

Question 13

Pure Substance or Mixture? Then classify

Iron

Answer 13

Pure substance

Element

Question 14

Pure Substance or Mixture? Then classify

Aluminum

Answer 14

Pure Substance

Element

Question 15

Pure Substance or Mixture? Then classify

Beef stew

Answer 15

Mixture

Hetero

Question 16

Intensive or Extensive?

Density

Answer 16

I

Question 17

Intensive or Extensive?

Boiling temperature

Answer 17

I

Question 18

Intensive or Extensive?

Freezing temperature

Answer 18

I

Question 19

Intensive or Extensive?

Conductivity

Answer 19

I

Question 20

Intensive or Extensive?

Ductility

Answer 20

I

Question 21

Intensive or Extensive?

Malleability

Answer 21

I

Question 22

Intensive or Extensive?

Luster

Answer 22

I

Question 23

Intensive or Extensive?

Temperature

Answer 23

I

*intensive form of energy

Question 24

Intensive or Extensive? Mass

Answer 24

E

Question 25

Intensive or Extensive? Weight

Answer 25

E

Question 26

Intensive or Extensive? Volume

Answer 26

E

Question 27

Intensive or Extensive? Length

Answer 27

E

Question 28

Intensive or Extensive? Potential Energy

Answer 28

E Because depends on mass

Question 29

Intensive or Extensive? Kinetic Energy

Answer 29

E

Question 30

Phys or Chem change? Sugar burning

Answer 30

Chemical

Question 31

Phys or Chem change? Sugar dissolving in water

Answer 31

Phys

Question 32

Phys or Chem change? Platinum ring becoming dull because abrasion

Answer 32

Phys

Question 33

Phys or Chem change? Silver tarnishes

Answer 33

Chem

Question 34

Two requirements to be a property of matter

Answer 34

1. Applicable to all matter 2. Not dependent on history of the matter ``` m T d E F P ``` *work is NOT a property of matter because it depends on path taken

Question 35

Is energy a property of matter?

Answer 35

Yes

Question 36

Is air homogenous or heterogeneous?

Answer 36

homogenous

Question 37

Which Law/theory states that no matter how or where a given compound is prepared or where it's found, it will always have the same composition?

Answer 37

Law of constant composition

Question 38

Which Law/theory states that compounds must be made up of whole numbers of particles?

Answer 38

Dalton's theory of multiple proportions

Question 39

5 components of Dalton's Theory

Answer 39

1. All elements are made up of minute indivisible particles called atoms 2. Atoms can neither be created nor destroyed 3. All atoms of a given element have identical mass and other properties 4. Atoms of different elements have different properties 5. A particle of a compound is made up of a fixed whole number of atoms of its component elements. Ex AB, AB2, A2B

Question 40

Basic ideas of Law of Combining Volumes

Answer 40

1. G-L: equal volumes contain an equal number of gas particles 2. D: gaseous elements should be atoms (don't like each other) 3. D: molecules must contain whole atoms (identify violations) 4. Avogadro (peacekeeper): if necessary, elements can be diatomic molecules. Remove violations by making elements that have fractions into diatomic molecules

Question 41

An element must be

Answer 41

An atom or diatomic molecule