Term
|
Definition
| The study of matter and changes it undergoes |
|
|
Term
|
Definition
| things we can touch (seen by naked eye) |
|
|
Term
|
Definition
| things we can imagine and measure with modern technology (cannot be seen with only the naked eye) |
|
|
Term
|
Definition
| Systematic approach to research (to figuring things out) |
|
|
Term
|
Definition
| a concise verbal or mathematical study of the relationship between phenomena that are always the same under the same conditions |
|
|
Term
|
Definition
| unifying principle that explains a body of facts and the laws that are based on those facts |
|
|
Term
|
Definition
| tentative explanation for a set of observations; leads to "if-when" questions; test of theory |
|
|
Term
|
Definition
anything that occupies space and has mass
-->all matter is made up of chemicals |
|
|
Term
|
Definition
| combination of 2 or more substances in which the substances retain distinct identities (air, milk, cement, tea, coffee) |
|
|
Term
|
Definition
| same composition throughout (sugar in water, tea) |
|
|
Term
|
Definition
| non-uniform composition (sand + iron filings) |
|
|
Term
|
Definition
| form of matter that has a definite or constant composition and distinct properties (H2O, NH3, sugar, gold...) |
|
|
Term
|
Definition
| substance that cannot be separated into simpler elements by chemical means |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| substance composed of atoms of 2 or more elements chemically united in fixed proportions |
|
|
Term
|
Definition
| can be measured and observed without changing the composition or identity of a substance |
|
|
Term
|
Definition
| requires a chemical change in order to be observed |
|
|
Term
|
Definition
| depends on the amount of material, Ex: mass and volume |
|
|
Term
|
Definition
| does not depend on the amount, EX: temperature and density |
|
|
Term
|
Definition
T
1,000,000,000,000
10^12
1 terameter(Tm)= 1 X 10^12 m |
|
|
Term
|
Definition
G
1,000,000,000
10^9
1 gigameter (Gm)= 1 x 10^9 |
|
|
Term
|
Definition
M
1,000,000
10^6
1 megameter (Mm)= 1 x 10^6 |
|
|
Term
|
Definition
k
1,000
10^3
1 kilometer (km)= 1 x 10^3 m |
|
|
Term
|
Definition
d
1/10
10^-1
1 decimeter (dm)= 0.1 m |
|
|
Term
|
Definition
c
1/100
10^-2
1 centimeter (cm)= 0.01 m |
|
|
Term
|
Definition
m
1/1000
10^-3
1 millimeter (mm)= 0.001 m |
|
|
Term
|
Definition
µ
1/1000,000
10^-6
1 micrometer (µm)= 1 x 10^-6 m |
|
|
Term
|
Definition
n
1/1,000,000,000
10^-9
1 nanometer (nm)= 1 x 10^-9 m |
|
|
Term
|
Definition
p
1/1,000,000,000,000
10^-12
1 picometer (pm) = 1 x 10^-12 m |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
d= mass/volume
usually g/cm^3 or g/mL |
|
|
Term
|
Definition
density of substance/ density of water
a dimensionless quantity |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
boiling point of water
a) Kelvin
b) ˚C
c) ˚F |
|
Definition
a) 373 K
b) 100˚C
c) 212˚ F |
|
|
Term
Body temperature
a) Kelvin
b)˚C
c)˚F |
|
Definition
|
|
Term
Room Temperature
a) Kelvin
b) ˚C
c) ˚F |
|
Definition
|
|
Term
Freezing point of water
a) K
b) ˚C
c) ˚F |
|
Definition
|
|
Term
| Sig Fig rule for multiplication and division |
|
Definition
| look for factor with the fewest # of sig figs |
|
|
Term
| Sig Fig rule for addition and subtraction |
|
Definition
| look for value with fewest # of decimal places |
|
|
Term
|
Definition
| # of "significant figures" shows degree of uncertainty in measurement |
|
|
Term
|
Definition
how close to the "true" value?
systematic errors |
|
|
Term
|
Definition
how reproducible is the measurement?
random errors |
|
|
Term
|
Definition
values that are exactly counted or defined can be assumed to have an infinite number of sig figs,
EX: 25 people or 1 foot= 12 inches |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
