Acid Reaction And Combustion

Question 1

Chemical reaction

Answer 1

A process in which one or more substances are changed into others by their atoms being rearranged

Question 2

Reactivity

Answer 2

How reactive a substance is

Question 3

Carbonate

Answer 3

A type of compound containing carbon and oxygen

Question 4

Carbon dioxide

Answer 4

The gas in air used by plants to make food. It is produced during respiration, by burning fossil fuels or by acids reacting with metal carbonates.

Question 5

Limewater

Answer 5

A solution used to test for the presence of carbon dioxide

Question 6

Indigestion

Answer 6

Disruption of the digestion process often resulting in too much acid being produced

Question 7

Heartburn

Answer 7

When an acid from the stomach irritates the upper digestive tract

Question 8

Antacid

Answer 8

A substance that neutralises stomach acid

Question 9

Fertiliser

Answer 9

a chemical put on soil to increase soil fertility and allow better growth of crop plants

Question 10

Misconception

Answer 10

A common idea that people share that is inaccurate

Question 11

Fuel

Answer 11

A material that is burned to release energy

Question 12

Combustion

Answer 12

The process of burning

Question 13

Fire triangle

Answer 13

a model to show the three things needed for a fire – heat, fuel and oxygen

Question 14

Exothermic

Answer 14

A chemical reaction in which heat energy is given out

Question 15

Energy

Answer 15

something has energy if it has the ability to make something happen when the energy is transferred

Question 16

Alcohol

Answer 16

A liquid chemical such as ethanol which can be used as a biofuel

Question 17

Sulfur dioxide

Answer 17

is produced when sulphur is oxidised during the combustion of some fossil fuels and is one of the main gases that produces acid rain

Question 18

Acid rain

Answer 18

rainwater that is made acidic by pollutant gases e.g. sulphur dioxide