equations
53,000,000,000,000 in scientific notation
5.3 x 10^13
temperature
Kelvin
how many mL are there in 1m^3
1,000,000 mL = 1m^3
give at least 1 point of Daltons' Atomic Theory
- all elements are composed of tiny indivisible particles called atoms
- atoms of the same element are identical the atoms of any 1 element are different from those of other element
- atoms of different elements can physically mix or chemically combine in simple whole # ratio to form compounds
- chemical reactions occur when atoms are separated from each other; joined or rearranged in a different combination. atoms of 1 element are never changed into atoms of another element as a result of a chemical reaction
what is chemistry
composition of matter and changes matter undergoes
(3 x 10^3) x (4 x 10^7)
12 x 10^10
Amount of Substance
Mole
how do joules measure energy?
unit of work (force x distance)
electron charge and mass
charge -1
mass - 9.11 x 10^-28
5 areas of a study in chemistry
- organic chemistry
- inorganic chemistry
- biochem
- analytical
- physical
(0.25 x 10^4) + (3.3 x 10^3)
5.8 x 10^3
Mass
Kilogram
how do calories measure energy?
the amount of energy required to raise 1g of pure water by 1 C
protons charge and mass
charge - 1+
mass - 1.67 x 10^-24
steps of the scientific process
observe and question - hypothesis - experiment - theory or back to hypothesis
a thermometer measures the boiling point of pure water as 99.6 C. Calculate the percent error of the reading.
((99.6-100.0) / 100.0) x 100%
= 0.4%
Electric Current
ampere
convert 345K into Celsius
subtract 273
345 - 273 = 72 C
neutrons charge and mass
charge 0
mass 1.67 x 10^-24
extensive and intensive properties
extensive - depends on how much matter is in a sample
intensive - depends on type of matter is in a sample
how many significant figures in 3120.00mm
6
Length
meters
express 4.22 g/cm^3 in kg/m^3
4220 kg/m^3
which atomic particles occupy the most volume in an atom
electrons
heterogeneous mixture and homogeneous mixture
heterogeneous - composition is unevenly distributed
homogeneous - compositions is evenly distributed