Final Formulas Flashcards
Density =
*Common units: (3)
mass (g) /
volume (mL)
*Common units: g/cm^3 g/mL g/L
Specific gravity =
*Units:
(D solute) /
(D H20)
*NO UNITS
Temperature Formula b/t °F and °C
5F= 9C+160
Absolute zero= _ K
K = or ≠ negative values
Absolute zero= 0 K
K ≠ negative values
Specific heat =
(amount of heat energy) /
(mass × change in temp)
Cp= Q/(m • ∆T)
Cp = Q/(m • ∆T) Cp = ? Q = ?
Cp= specific heat Q= amount of heat
Specific heat units:
Of water:
J/(g • ℃) or cal/(g • ℃)
4.184 • J/(g • ℃) = 1.0cal/(g • ℃)
Heat energy units:
1 cal = _ J
joule (J) and calorie (cal)
1 cal = 4.184 J (exact)
“Burning calorie” units:
kJ/g or kcal/g
Energy UNITS for Foods:
kilocalories =
kilojoules =
Calorie=
kilocalories = g • kcal/g kilojoules = g • kJ/g Calorie= kcal
1 Cal = _ kcal = _ cal
1 Cal = _ kJ = _ J
1 Cal = 1 kcal = 1000 cal
1 Cal = 4.184 kJ = 4184 J
Energy Values (in kcal/g and kJ/g) for
Carbohydrate:
Fat:
Protein:
Carbohydrate 4kcal/g 17 kJ/g
Fat 9kcal/g 38 kJ/g
Protein 4kcal/g 17 kJ/g
For ions in the same period (row) which is smaller/larger?
More positive =
More negative =
More positive = smaller
More negative = larger
An Ionic compound is composed of:
*Reduce?
METAL + NONMETAL
*REDUCE to lowest ratio
Covalent (molecular) molecules are composed of:
*Reduce?
NONMETAL + NONMETAL
*DON’T REDUCE
Mole =
6.022 × 10^23 items
Molar mass =
mass of 1 mole of a substance in g/mo
Molar Mass (g) = __ L gas at STP
22.4 L gas at STP
if you know the mass of each element you can find the mass composition of each element
Mass composition
Percent composition is the
mass of each element • 100 units (g) of compound
Mass percent =
(mass of element) /
(total mass compound)× 100%
A Combustion reaction is
reaction with O2
Combination reactions have
*Is also called?
one product
*A.k.a. synthesis
Decomposition reactions have
one reactant
Single displacement reactions have
one element + one ionic compound reactants
Double replacement reactions have
2 ionic compounds as reactants
