Topic C3 Terms To Learn

Question 1

Alloy

Answer 1

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

Question 2

Covalent bond

Answer 2

the bond between two atoms that share one or more pairs of electrons

Question 3

Covalent bonding

Answer 3

the attraction between two 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

Gasses

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 3D network of atoms or ions

Question 10

Giant structure

Answer 10

see giant lattice

Question 11

Intermolecular forces

Answer 11

the attraction between the individual molecules in a covalently bonded substance

Question 12

Ionic bond

Answer 12

the electrostatic force of attraction between positively and negatively charged ions

Question 13

Liquids

Answer 13

substances that have a fixed volume, but they can flow and change their shape

Question 14

Particle theory

Answer 14

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 15

Polymer

Answer 15

a substance made from very large molecules made up of many repeating units

Question 16

Solids

Answer 16

substances that have a fixed shape and volume that cannot be compressed

Question 17

States of matter

Answer 17

the forms in which matter can exist. A substance can be solid, liquid or gas