Chem 1201 Final LSU
Peta (P) 10^15
Tera (T) 10^12
Giga (G) 10^9
Mega (M) 10^6
Kilo (k) 10^3
Deci (d) 10^-1
Centi (c) 10^-2
Milli (m) 10^-3
Micro (u) 10^-6
Nano (n) 10^-9
Pico (p) 10^-12
Femto (f) 10^-15
Atto (a) 10^-18
Zepto (z) 10^-21
-use the smallest number of decimal places How do you determine sig figs when adding and subtracting?
Multiplying and dividing?
-use the smallest number of significant figures
, Chem 1201 Final LSU
accuracy measures the proximity to the true value
precision measures the proximity to other measurements
1mL= 1cm^3 ___mL=___cm^3
1 inch= 2.54 cm ___inch=___cm
mass number What do each number on a chemical symbol represent?
elemental symbol
atomic number
protons + neutrons mass number
protons atomic number
isotopes atoms of the same element with different masses/ numbers of neutrons
multiply abundance as a decimal and amu; then add How do you calculate average atomic weight?
together
know that f1+f2+f3=1; take the % to decimals and subtract How do you calculate percent abundance?
from 1
alkali metals 1A
alkaline earth metals 2A
chalcogens 6A
halogens 7A
noble gases 8A
H2, N2, O2, F2, Cl2, Br2, I2 What are the diatomic molecules?
(Hydrogen plus shape of 7)
anion When a metal and nonmetal react, the nonmetal tends to form a
cation __________________ and the metal tends to form a ________________.
molecular formula that shows the exact number of atoms in each compound
Ex: H2O2
emperical formula that shows the relative number of atoms (ratio)
Ex: OH
Peta (P) 10^15
Tera (T) 10^12
Giga (G) 10^9
Mega (M) 10^6
Kilo (k) 10^3
Deci (d) 10^-1
Centi (c) 10^-2
Milli (m) 10^-3
Micro (u) 10^-6
Nano (n) 10^-9
Pico (p) 10^-12
Femto (f) 10^-15
Atto (a) 10^-18
Zepto (z) 10^-21
-use the smallest number of decimal places How do you determine sig figs when adding and subtracting?
Multiplying and dividing?
-use the smallest number of significant figures
, Chem 1201 Final LSU
accuracy measures the proximity to the true value
precision measures the proximity to other measurements
1mL= 1cm^3 ___mL=___cm^3
1 inch= 2.54 cm ___inch=___cm
mass number What do each number on a chemical symbol represent?
elemental symbol
atomic number
protons + neutrons mass number
protons atomic number
isotopes atoms of the same element with different masses/ numbers of neutrons
multiply abundance as a decimal and amu; then add How do you calculate average atomic weight?
together
know that f1+f2+f3=1; take the % to decimals and subtract How do you calculate percent abundance?
from 1
alkali metals 1A
alkaline earth metals 2A
chalcogens 6A
halogens 7A
noble gases 8A
H2, N2, O2, F2, Cl2, Br2, I2 What are the diatomic molecules?
(Hydrogen plus shape of 7)
anion When a metal and nonmetal react, the nonmetal tends to form a
cation __________________ and the metal tends to form a ________________.
molecular formula that shows the exact number of atoms in each compound
Ex: H2O2
emperical formula that shows the relative number of atoms (ratio)
Ex: OH
