# Chemistry and Physics Paper 1 Equations 9-1

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#1
Does anyone know the Chemistry and Physics Equations you need to know for both Paper 1's? GCSE 9-1
0
2 years ago
#2
relative atomic mass=Σ(isotope abundance×isotope mass number)/100

total mass of reactants=total mass of products

The relative formula (molecular) mass is equal to the sum of the relative atomic masses of all the atoms in a formula.

The number of moles (mol) is equal to the mass (g) divided by the relative formula mass(g/mol).

moles=mass/relative formula mass

concentration(g/dm3)=mass(g)​/volume(dm3)

percentage yield=(theoretical yield/real yield)​×100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)​×100

^= to the power of

Factor h+ ion concentration changes by 10^-x
x= change in pH

Acid + Metal Oxide -> salt + water
Acid + Metal hydroxide -> Salt +water
Acid + Metal Carbonate -> Salt + Water + Carbon Dioxide.
Acid + Metal -> Salt + Hydrogen
Metal + Water -> Metal Hydroxide + hydrogen

Gravitational Potential energy gained= kinetic energy lost
Energy (kinetic)= 0.5*mass*velocity*velocity
Energy (g.p.e) = mass*gravitational field strength*height
Energy (elastic potential) =0.5*spring constant*extension*extension
Change in thermal energy = mass *specific heat capacity*temperature change
Power= energy / time
Power = work/time
efficiency= useful output energy transfer/ total input energy transfer
efficiency= useful power output/ total power input
Charge flow = current * time
Potential difference = current * resistance
In series circuit potential difference is shared. Current is the same .Resistance adds up

In parallel potential difference is the same. current adds. resistance increase= decrease in total resistance.
Energy = power * time
Energy = charge * potential differnece
Power = potential difference * current
Power = Current*current*resistance
density = mass/volume
Energy = mass * specific latent heat
7
2 years ago
#3
(Original post by MLH16)
Does anyone know the Chemistry and Physics Equations you need to know for both Paper 1's? GCSE 9-1
This is for Aqa combined btw
0
#4
(Original post by SmartMemoryGirl!)
relative atomic mass=Σ(isotope abundance×isotope mass number)/100

total mass of reactants=total mass of products

The relative formula (molecular) mass is equal to the sum of the relative atomic masses of all the atoms in a formula.

The number of moles (mol) is equal to the mass (g) divided by the relative formula mass(g/mol).

moles=mass/relative formula mass

concentration(g/dm3)=mass(g)​/volume(dm3)

percentage yield=(theoretical yield/real yield)​×100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)​×100

^= to the power of

Factor h+ ion concentration changes by 10^-x
x= change in pH

Acid + Metal Oxide -> salt + water
Acid + Metal hydroxide -> Salt +water
Acid + Metal Carbonate -> Salt + Water + Carbon Dioxide.
Acid + Metal -> Salt + Hydrogen
Metal + Water -> Metal Hydroxide + hydrogen

Gravitational Potential energy gained= kinetic energy lost
Energy (kinetic)= 0.5*mass*velocity*velocity
Energy (g.p.e) = mass*gravitational field strength*height
Energy (elastic potential) =0.5*spring constant*extension*extension
Change in thermal energy = mass *specific heat capacity*temperature change
Power= energy / time
Power = work/time
efficiency= useful output energy transfer/ total input energy transfer
efficiency= useful power output/ total power input
Charge flow = current * time
Potential difference = current * resistance
In series circuit potential difference is shared. Current is the same .Resistance adds up

In parallel potential difference is the same. current adds. resistance increase= decrease in total resistance.
Energy = power * time
Energy = charge * potential differnece
Power = potential difference * current
Power = Current*current*resistance
density = mass/volume
Energy = mass * specific latent heat
Thank you so much
0
11 months ago
#5
relative atomic mass one is wrong, percentage yield one is wrong and atom economy one is wrong
0
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