Chem Ch. 1 & 2

Front 1

chemistry

Back 1

the science that deals with the materials of the universe and the changes that these materials undergo

Front 2

set of tested hypothesis that gives over all explanation of some part of nature

Back 2

theory (model)

Front 3

an explanation of behavior

Back 3

theory

Front 4

a summary of observed bahavior

Back 4

law

Front 5

process that lies at the center of a scientific inquiry

Back 5

scientific method

Front 6

scientific method process

Back 6

1. state the problem and collect data (make observation)
2. formulate hypothesis
3. perform experiment

Front 7

name the 3 things in measurement

Back 7

1. sign
2. unit
3. magnitude (#)

Front 8

name the 7 quantities of measurements

Back 8

1. Length (m)
2. Mass (kg)
3. Time (s)
4. current ( amp)
5. Temp (K)
6. amount of substance (mol)
7. Intensity

Front 9

uncertainty always lies in 1. digit

Back 9

1. last

Front 10

how many digits can be to the left of the (.) in scientific notation

Back 10

only one to the left of the (.)

Front 11

mega

Back 11

M

Hint 11

10^6
1,000000

Front 12

kilo

Back 12

k

Hint 12

10^3
1000

Front 13

deci

Back 13

d

Hint 13

10^-1
0.1

Front 14

centi

Back 14

c

Hint 14

10^-2
0.01

Front 15

milli

Back 15

m

Hint 15

10^-3
0.001

Front 16

micro

Back 16

u

Hint 16

10^ -6
0.000001

Front 17

nano

Back 17

n

Hint 17

10^ -9
0.000000001

Front 18

the amount of 3D space occupied

Back 18

volume

Front 19

the amount of matter present in a given volume of substance

Back 19

density

Front 20

density = ?

Back 20

m / v

Front 21

mass = ?

Back 21

v * d

Front 22

volume = ?

Back 22

m / d

Front 23

the stuff of which the universe is composed, has mass and is occupies space

Back 23

matter

Front 24

name the three states of matter

Back 24

solid
liquid
gas

Front 25

characteristics of color, boiling point, freezing point, metal wire conducting electric current.

Back 25

physical properties

Front 26

describes inherent characteristics of each substance, and no change in composition occurs

Back 26

physical property

Front 27

describes pure substances, and refers to its ability to form new substances

Back 27

chemical property

Front 28

characteristics of wood burning, rusting, digestion of food.
substance will never go back to original state

Back 28

chemical property

Front 29

____ can not be broken down into other substances . the base of substance

Back 29

elements

Front 30

example of ___
( Na, O, H)

Back 30

elements

Front 31

___ make up elements
2. elements bind and form ____

Back 31

1. atoms
2. compounds

Front 32

compound always contains ___ of different elements

Back 32

atoms

Front 33

compounds can be broken down to ___ thru chemical change

Back 33

elements

Front 34

has variable composition

Back 34

mixture

Front 35

will always have the same composition. are either elements or compounds

Back 35

pure substance
ex. H20

Front 36

mixtures have 2 classifications ..?

Back 36

1. homogenous mixture
2. heterogeneous mixture

Front 37

a mixture that has the same composition throughout. does not vary in composition from one region to another

Back 37

homogenous mixture
*table salt mixed in water

Front 38

mixture that contains regions that have different properties.

Back 38

heterogenous mixture
* pouring sand in water

Front 39

we can separate mixtures by 1 and 2

Back 39

1. distillation
2. filtration