Chemistry C3

Question 1

Alloy

Answer 1

A mixture of 2 or more elements, at least one of which is a metal

Question 2

Covalent bond

Answer 2

The bond between 2 atoms that share one or more pairs of electrons

Question 3

Covalent bonding

Answer 3

The attraction between 2 atoms that share one or more pairs of electrons

Question 4

Delocalised electron

Answer 4

Bonding electron that is no longer associated with any one particular atom

Question 5

Dot and cross diagram

Answer 5

A drawing to show only the arrangement of outer shell electrons of the atoms or ions in a substance

Question 6

Fullerene

Answer 6

Form of the element carbon that can exist as large cage like structures, based on hexagonal rings of carbon atoms

Question 7

Gases

Answer 7

Substances that have no fixed shape or volume and can be compressed easily

Question 8

Giant covalent structure

Answer 8

A huge 3d network of covalently bonded atoms

Question 9

Giant lattice

Answer 9

A huge network of atoms or ions

Question 10

Intermolecular forces

Answer 10

The attraction between the individual molecules in a covalently bonded substance

Question 11

Ionic bond

Answer 11

The electrostatic force of attraction between positively and negatively charged ions

Question 12

Particle theory

Answer 12

A theory that explains the properties of solids, liquids and gases based on the fact that all matter is made from tiny particles. It describes the movement of particles and the distance between them

Question 13

Polymer

Answer 13

A substance made from very large molecules made up of many repeating untis