Topic 2b- Reaction Types

Question 1

Aerobic respiration

Answer 1

A reaction that uses oxygen to release energy stored in glucose

Question 2

Anodizing

Answer 2

A way of protecting aluminum from corrosion, by deliberately creating a layer of aluminum oxide over it

Question 3

Balanced formula equation

Answer 3

A chemical equation that has the same numbers of each atom on both sides of the arrow

Question 4

Combustion

Answer 4

A rapid reaction with oxygen that releases energy in the form of heat and/or light sound

Question 5

Complete combustion

Answer 5

Combustion that occurs when there is plenty of oxygen. It produces carbon dioxide and water vapor

Question 6

Corrosion

Answer 6

The break down of metals due to their reaction with other chemicals

Question 7

Endothermic

Answer 7

A chemical reaction that absorbs energy

Question 8

Exothermic

Answer 8

A chemical reaction that releases energy

Question 9

Glucose

Answer 9

A type of sugar produced by photosynthesis, chemical formula- C6, H12, O6

Question 10

Hydrocarbons

Answer 10

Highly combustible chemicals, petrol is a mixture of hydrocarbons

Question 11

Incomplete combustion

Answer 11

Combustion that occurs when oxygen is limited. It produces carbon and carbon monoxide. It does not release as much heat or light as a complete combustion.

Question 12

Law of conservation of mass

Answer 12

Atoms are not created or destroyed n a chemical reaction, they can only be rearranged

Question 13

Photosynthesis

Answer 13

Endothermic reaction that takes place in green plants. Uses energy from sunlight I combine water and carbon dioxide and produce glucose and oxygen gas

Question 14

Products

Answer 14

Chemicals produced in a chemical reaction. Written on the right hand side of the arrow

Question 15

Reactions

Answer 15

Chemicals that take part in a chemical reaction. Written on the left hand side of the arrow

Question 16

Rust

Answer 16

Hydrated iron (III) oxide, Fe2 O3 . H2O

Question 17

Tarnish

Answer 17

A black coating of silver sulfide that is produced when silver reacts with sulfur in the atmosphere, chemical formula- Ag2S

Question 18

Verdigris

Answer 18

A green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen n the atmosphere. Chemical formula- Cu(OH)2

Question 19

Word equation

Answer 19

Simple written description of what is happening in a reaction

Question 20

Acid rain

Answer 20

Rain that has acids such as nitric acid and sulphuric acid dissolved in it

Question 21

Neutralization

Answer 21

A reaction of an acid with a base, forming a salt and water

Question 22

Salt

Answer 22

The term commonly used for sodium chloride, but covers any compound formed by a metal taking the place of the hydrogen atom in an acid

Question 23

Carbon sink

Answer 23

A term used to describe materials that store carbon in their structures. Plants and animals can be thought of as carbon sinks

Question 24

Chlorophyll

Answer 24

A green chemical found in chloroplasts of green plants, needed to carry out photosynthesis

Question 25

Diatoms

Answer 25

Single celled organisms that live in water.

Question 26

Diffusion

Answer 26

The movement of particles in a substance from a high concentration to a low concentration, which eventually evenly spread out due to the movement of them

Question 27

Enzyme

Answer 27

A biological catalyst that speed up a reaction, a protein

Question 28

Respiration

Answer 28

A chemical reaction in which glucose is broken down, releasing energy for use by the plant or animal. Carbon dioxide and water are also produced. Occurs in the mitochondria