# Chemistry and Physics Paper 1 Equations 9-1

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Does anyone know the Chemistry and Physics Equations you need to know for both Paper 1's? GCSE 9-1

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#2

relative atomic mass=Ξ£(isotope abundanceΓisotope 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)β/volume(dm3)

percentage yield=(theoretical yield/real yield)βΓ100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)βΓ100

^= to the power of

Avogadro's constant = 6.02 *10^23

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

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)β/volume(dm3)

percentage yield=(theoretical yield/real yield)βΓ100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)βΓ100

^= to the power of

Avogadro's constant = 6.02 *10^23

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

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#3

(Original post by

Does anyone know the Chemistry and Physics Equations you need to know for both Paper 1's? GCSE 9-1

**MLH16**)Does anyone know the Chemistry and Physics Equations you need to know for both Paper 1's? GCSE 9-1

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(Original post by

relative atomic mass=Ξ£(isotope abundanceΓisotope 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)β/volume(dm3)

percentage yield=(theoretical yield/real yield)βΓ100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)βΓ100

^= to the power of

Avogadro's constant = 6.02 *10^23

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

**SmartMemoryGirl!**)relative atomic mass=Ξ£(isotope abundanceΓisotope 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)β/volume(dm3)

percentage yield=(theoretical yield/real yield)βΓ100

atom economy(%)=(total relative molecular mass of all reactants/relative molecular mass of desired products)βΓ100

^= to the power of

Avogadro's constant = 6.02 *10^23

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

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#5

relative atomic mass one is wrong, percentage yield one is wrong and atom economy one is wrong

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