Science Formula Flashcards
Potential Difference (V)
V = IR
V = I x R
V = Voltage (V)
I = Current (A)
R = Resistance (Ω)
Power (W)
P = e/t P = w/t
P = Power (w)
e = Energy (J)
w = Work done (J)
t = Time (s)
Energy Transfered (J)
E = QV
E = Q x V
E = Energy transfered (J)
Q = Charge flow (c)
V = Potential difference (V)
Gravitational Potential Energy (J)
GPE = mgh
GPE = m x g x h
m = Mass (kg)
h = Height (m)
G = Gravitational field strength
Charge Flow (c)
Q = it
Q = i x t
Q = Charge flow (c)
I = Current (A)
t = Time (s)
Work done (J)
W = Fd
W = F x d
W = Work done (J)
F = Force (N)
d = Distance (m)
Volume of gas (dm^3)
V = mass of gass/mr of gas
V = Volume
mr = Relative formula mass
Number of moles
mole = mass/mr
mr = Relative formula mass
Relative atomic mass (Ar)
Ar = sum of (usotope abundance x usotope mass number) / sum of abundances of all usotopes
Ar = Relative atomic mass
Concentration equations
concentration = mass of source / volume of solvent
g/dm^3
concentration = no° of moles in source / volume of solvent
mol/dm^3
no° = Number of
Kinematics
V = U + at
S = Ut + 1/2at^2
V^2 = U^2 + 2as
a = Constant acceleration
U = Initial velocity
V = Final velocity
S = Displacement
t = Time
Density Formula
density = mass/volume
Frequency Density
Frequency Density = frequency / class width
Atom economy
Atom economy = (Mr mass of desired products / Mr mass of all reactants) x 100
Mr = Relative formula mass
Percentage yield
Percentage yield = (mass of product actively made / max (theoretical) mass of product) x 100
