BTEC Applied Science Practice Questions and Answers Latest Update 2025 Graded A+
Moles= - Answers concentration (mol dm-3)x volume(dm3)
Percentage yield - Answers actual yield/theoretical yield x 100
moles= - Answers Mass (grams) / Mr
Number of particles - Answers number of moles x 6.023x 10^23
RFM - Answers Sum of relative atomic masses
RAM - Answers (Mass of isotope x abundance) + (mass of isotope x abundance)/ total abundance
Use of gold and silver - Answers Jewellery - shiny, malleable and unreactive
Use of aluminium - Answers Drink cans - malleable non-toxic and has a low density
Use of aluminium - Answers Power lines - conducts electricity, high MP and has a low density
Use of gold - Answers Connector in an electrical circuit - malleable high MP and conducts electricity
Use of iron - Answers Bridges- strong
Use of metal salts - Answers Make the colour in fireworks
Use of sodium chloride - Answers Making glass, paper and rubber
Use of Potassium chloride - Answers Chemical feedstock, medicine and food processing
Use of magnesium chloride - Answers Refrigeration, fire proofing and dicing agent
Use of calcium chloride - Answers Food processing, deicing agent
Use of sulfate - Answers Detergent and cleansing agents
Use of sodium sulfate - Answers Cattle feed, dry agent, in batteries and in glass
Use of copper sulfate - Answers Water treatment to kill algae
Use of Sodium hydroxide - Answers Making soap
use of potassium hydroxide - Answers Making soap
Use of magnesium hydro - Answers Laxative
Use of calcium hydroxide - Answers Paper production, sewage treatment and root canal fillings
Use of sodium oxide - Answers Making glass
, Use of potassium oxide - Answers Fertiliser
Use of magnesium oxide - Answers Indigestion tablets, starter material in alloys and fibre glass
production
Use of calcium oxide - Answers Making glass and in cement
Use of carbon dioxide - Answers Refrigerant, fire extinguisher
Use of Nitrogen dioxide - Answers Production of nitric acid and dyes
Use of silicon dioxide - Answers Making glass and concrete
Use of phosphorus pentoxide - Answers Dehydrating agent
Use of soldier dioxide - Answers Disinfectant, refrigerant
Oxidation - Answers loss of electrons, gain of oxygen, increase in oxidation number
Reduction - Answers loss of oxygen, gain of electrons, decrease in oxidation number
redox reaction - Answers When oxidation and reduction both occur
Reactivity of metals down group 1 and 2 - Answers Increases.
More electron shells
More shielding
Outer electrons is further away from the nucleus
Outer electrons is less attracted to the nucleus
Outer electrons is more easily lost
Reactivity of metal across periods 2 and 3 - Answers Decreases.
More protons
No change in shielding
Outer electrons is closer to the nucleus
Outer electrons is more attracted to the nucleus
Outer electrons are harder to lose
Reactivity series of metals - Answers Potassium, sodium, calcium, magnesium, aluminium, zinc, iron,
copper, silver, gold, (sometimes, people call me a zebra in class she grunts)
Moles= - Answers concentration (mol dm-3)x volume(dm3)
Percentage yield - Answers actual yield/theoretical yield x 100
moles= - Answers Mass (grams) / Mr
Number of particles - Answers number of moles x 6.023x 10^23
RFM - Answers Sum of relative atomic masses
RAM - Answers (Mass of isotope x abundance) + (mass of isotope x abundance)/ total abundance
Use of gold and silver - Answers Jewellery - shiny, malleable and unreactive
Use of aluminium - Answers Drink cans - malleable non-toxic and has a low density
Use of aluminium - Answers Power lines - conducts electricity, high MP and has a low density
Use of gold - Answers Connector in an electrical circuit - malleable high MP and conducts electricity
Use of iron - Answers Bridges- strong
Use of metal salts - Answers Make the colour in fireworks
Use of sodium chloride - Answers Making glass, paper and rubber
Use of Potassium chloride - Answers Chemical feedstock, medicine and food processing
Use of magnesium chloride - Answers Refrigeration, fire proofing and dicing agent
Use of calcium chloride - Answers Food processing, deicing agent
Use of sulfate - Answers Detergent and cleansing agents
Use of sodium sulfate - Answers Cattle feed, dry agent, in batteries and in glass
Use of copper sulfate - Answers Water treatment to kill algae
Use of Sodium hydroxide - Answers Making soap
use of potassium hydroxide - Answers Making soap
Use of magnesium hydro - Answers Laxative
Use of calcium hydroxide - Answers Paper production, sewage treatment and root canal fillings
Use of sodium oxide - Answers Making glass
, Use of potassium oxide - Answers Fertiliser
Use of magnesium oxide - Answers Indigestion tablets, starter material in alloys and fibre glass
production
Use of calcium oxide - Answers Making glass and in cement
Use of carbon dioxide - Answers Refrigerant, fire extinguisher
Use of Nitrogen dioxide - Answers Production of nitric acid and dyes
Use of silicon dioxide - Answers Making glass and concrete
Use of phosphorus pentoxide - Answers Dehydrating agent
Use of soldier dioxide - Answers Disinfectant, refrigerant
Oxidation - Answers loss of electrons, gain of oxygen, increase in oxidation number
Reduction - Answers loss of oxygen, gain of electrons, decrease in oxidation number
redox reaction - Answers When oxidation and reduction both occur
Reactivity of metals down group 1 and 2 - Answers Increases.
More electron shells
More shielding
Outer electrons is further away from the nucleus
Outer electrons is less attracted to the nucleus
Outer electrons is more easily lost
Reactivity of metal across periods 2 and 3 - Answers Decreases.
More protons
No change in shielding
Outer electrons is closer to the nucleus
Outer electrons is more attracted to the nucleus
Outer electrons are harder to lose
Reactivity series of metals - Answers Potassium, sodium, calcium, magnesium, aluminium, zinc, iron,
copper, silver, gold, (sometimes, people call me a zebra in class she grunts)
