GCSE: OCR gateway: C3: Reacting masses
- Created by: 09tvzutphen
- Created on: 09-04-14 20:30
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- C2
- Rate of reaction
- Explosions and Surface Area
- Combustable powders cause explosions
- Some powders react with oxygen to make large volumes of CO2 and water vapour
- Owners of factories using combustable powders (flower) ensure powders cannot reach the atmosphere and that a spark being produced near the powders is small
- As the surface area of a reactant is increased so is it's rate of reaction; more collisions per second
- Combustable powders cause explosions
- Catalysts and Rates of Reaction
- Changes the rate of reaction and is unchanged at the end of the reaction
- Only a small quantity of catalyst is needed to catalyse a large amount of reactants
- Each catalyst is specific to a paticular reaction
- Explosions and Surface Area
- Reacting masses
- Relative Formula Mass
- Work out the masses inside of the braket
- Multiply the total by the number outside of the brackets
- Work out the remaining number
- Add the totals
- 164
- 40 + 124
- Ca(62*2)
- Ca(14+(16*3))2
- Ca(NO3)2 Ca=40 N=14 O=16
- Ca(14+(16*3))2
- Ca(62*2)
- 40 + 124
- 164
- 40 + 124
- Ca(62*2)
- Ca(14+(16*3))2
- Ca(NO3)2 Ca=40 N=14 O=16
- Ca(14+(16*3))2
- Ca(62*2)
- Add the totals
- Work out the remaining number
- Multiply the total by the number outside of the brackets
- Work out the masses inside of the braket
- Conservation of Mass
- Mass of reactants equal to products
- Predicting the Yield of a Reaction
- Write balanced symbol equation
- Find atomic masses of the elements
- Add units
- Find amount needed to make 1g of product
- Multiply up to the amount of reactant needed
- (80g*20g)/124g = 12.9g
- 80g/124g CuCO3 makes 1g of CuO
- 124g of CuCO3 makes 80g of CuO
- Add units
- Find amount needed to make 1g of product
- Multiply up to the amount of reactant needed
- (80g*20g)/124g = 12.9g
- 80g/124g CuCO3 makes 1g of CuO
- 124g of CuCO3 makes 80g of CuO
- 124g of CuCO3 makes 80g of CuO
- 80g/124g CuCO3 makes 1g of CuO
- (80g*20g)/124g = 12.9g
- Multiply up to the amount of reactant needed
- Find amount needed to make 1g of product
- Add units
- 124g of CuCO3 makes 80g of CuO
- 80g/124g CuCO3 makes 1g of CuO
- (80g*20g)/124g = 12.9g
- Multiply up to the amount of reactant needed
- Find amount needed to make 1g of product
- Add units
- Find atomic masses of the elements
- Write balanced symbol equation
- Relative Formula Mass
- Rate of reaction
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