Yr 10 Science - chemical reactions

Combustion

100

The name of the reaction when a hydrocarbon fuel is reacted with oxygen to produce carbon dioxide and water

What is combustion?

200

For any given volume of fuel, the availability of this molecule often controls whether the combustion is complete or incomplete

What is oxygen?

300

Hydrocarbons are made of combinations of these two elements

What is carbon and hydrogen?

400

The number of Oxygen (O₂) molecules required to balance an equation for the complete combustion of Ethane (C₂H₆)

What is 7?

500

The number of oxygen molecules (O₂) required to combust one molecule of propane (C₃H₈) completely. 

What is 5?

Neutralisation

100

When an acid and a base neutralise each other they produce

What is salt and water?

200

The colour that tomato juice will turn a piece of blue litmus paper

What is red?

300

The pH of a solution if an acid and a base have completely neutralised one another

What is 7?

400

Universal indicator added to an extremely strong base will turn this colour

What is purple?

500

The number of Nitric acid (H⁺NO₃^-) molecules it takes to neutralise one molecule of Barium hydroxide (Ba²⁺(OH^-)₂) completely

What is 2?

Acid/carbonate

100

When an acid and a carbonate meet, they produce...

What is salt, water and carbon dioxide?

200

The word that describes how easily most carbonates dissolve in water

What is insoluble?

300

This carbonate is green

What is copper carbonate?

400

This acid is commonly used in car batteries

What is sulphuric acid?

500

The products of a reaction between one molecule of sulphuric acid (H₂SO₄) and one molecule of calcium carbonate (CaCO₃)

What is 1 molecule each of calcium sulphate, carbon dioxide and water?

Precipitation

100

When two soluble salts are mixed, and a solid falls out of solution

What is precipitation

200

If a solution is clear, the solute is

What is soluble?

300

The name of the reaction that can result in two soluble salts forming a precipitate

What is double substitution?

400

The products of a double substitution between one molecule of Silver Nitrate (Ag⁺NO₃^-), and one molecule of Sodium Chloride (Na⁺Cl^-).

What are AgCl + NaNO3?

500

The balanced equation of a double substitution reaction between Lead Nitrate (Pb(NO₃)₂) and Potassium Iodide (KI) producing Lead Iodide (PbI₂) and Potassium Nitrate (KNO₃)

What is PbI₂ + 2KNO₃ ?

Acid metal

100

When a metal and an acid are mixed, they produce

What is salt and hydrogen?

200

How a metal reacts when exposed to a weak acid is an indicator of this

What is reactivity?

300

This group of metals is almost always highly reactive

What is alkali metals?

400

Gold, lead and silver are this level of reactive

What is less reactive?

500

The number of Lithium (Li⁺) ions necessary to react to 1 molecule of Sulphuric Acid (H₂SO₄) in a balanced equation.

What is 2