Vocab

Question 0

Quantitative

Answer 0

Something you can measure(#+units)

Question 1

Scientific Method

Answer 1

A way of solving problems

Question 2

Qulaitative

Answer 2

Characteristics such as color, smell, etc.

Question 3

Theories

Answer 3

• tries to explain why or how something happens

- Can be disproven and have predictive outcome(state why)

Question 4

Laws

Answer 4

• States what happened

- Cannot be disproven and state how(has mathematics)

Question 5

Law of Multiple Proportions

Answer 5

Elements can combine in different ratios to form different compounds

Question 6

Property

Answer 6

-any characteristic that allows us to recognize a particular type of matter and to distinguish it

Question 7

Macroscopic

Answer 7

Ordinary sized

Question 8

Composition

Answer 8

The kind of atoms matter contains

Question 9

Structure

Answer 9

The arrangement of the atoms that make up matter

Question 10

Submicroscopic

Answer 10

Realm of atoms and molecules

Question 11

The Law of Constant Composition or(Law of Definite Proportions)

Answer 11

The observation that the elemental composition of a compound,is always the same

Question 12

Chemical properties

Answer 12

Describe the way a substance may change (react) to form other substances

Question 13

Physical properties

Answer 13

can be observed w/out changing the i.d. and composition of the substance

Question 14

Intensive properties

Answer 14

Can be used to i.d. substances

Question 15

Extensive properties

Answer 15

Relate to the amount of substance present

Question 16

Chemical change

Answer 16

Transform into another substance

Question 17

Physical change

Answer 17

Changes its physical appearance not its composition

Question 18

Temperature

Answer 18

A physical property that determines the direction of heat flow

Question 19

Density

Answer 19

Is defined as the amount of mass in a unit volume of a substance

Question 20

Dimensional analysis(bridge method)

Answer 20

Provides a systematic way of solving many numerical problems and of checking solutions for possible errors

Question 21

Conversion factor

Answer 21

A fraction who numerator and denominator are the same quantity expressed in different units

Question 22

Matter

Answer 22

Anything having mass and volume(takes up space)

Question 23

Mass

Answer 23

The amount of matter in an object

Question 24

Weight/weighing

Answer 24

The pull of gravity on an object

Question 25

Volume

Answer 25

The space an object occupies (can change size)

Question 26

Atom

Answer 26

Basic building block

Question 27

Elements

Answer 27

Contain only one type of atom

Question 28

Systematic errors

Answer 28

Reduce accuracy(instruments)
-go in a single direction

Question 29

Random errors

Answer 29

Reduce precision(human errors)
-error in any direction

Question 30

Pure substances

Answer 30

Distinct properties and composition(doesnt vary from sample to sample)

Question 31

Elements

Answer 31

Atoms

Question 32

Compounds

Answer 32

Substances composed of two or more elements, they contain two or more kinds of atoms

Question 33

Mixtures

Answer 33

Combinations of two or more substances in which each substance retains it chemical i.d.

Question 34

Accuracy

Answer 34

How close a measurement is to the accepted value(correct)

Question 35

Precision

Answer 35

How close a series of measurements are to each other(consistent)

Question 36

Direct proportion(graph)

Answer 36

Straight line

Question 37

Inverse proportion(graph)

Answer 37

Curve

Question 38

Mixture-solution

Answer 38

Homogen
Very small particles
No tyndall effect
(Rubbing alcohol)

Question 39

Mixture-colloid

Answer 39

Hetero
Medium sized particles
Tyndall effect
Particles dont settle
(Milk)

Question 40

Mixture-suspension

Answer 40

Hetero
Large particles
Tyndall effect 
Particles settle
(Lemonade)