C2: Atoms, Elements & Compounds KEYWORDS

Question 1

Smallest part of an element

Answer 1

Atom

Question 2

Two or more different types of atom chemically bonded together

Answer 2

Compound

Question 3

Two or more atoms (could be the same or different) chemically bonded together

Answer 3

Molecule

Question 4

Negatively charged subatomic particle that orbits the nucleus of an atom

Answer 4

Electron

Question 5

Written as words or symbols to show the reactants and products in a chemical reaction

Answer 5

Equation

Question 6

Shows the ratio of elements in a molecule

Answer 6

Formula

Question 7

Contains different substances not chemically joined together

Answer 7

Mixture

Question 8

Particle found in the nucleus of atoms with no overall charge

Answer 8

Neutron

Question 9

Positively charged particle found in the nucleus of atoms

Answer 9

Proton

Question 10

Substance which contains only one type of atom

Answer 10

Element

Question 11

Substances found on the left hand side of a chemical equation

Answer 11

Reactants

Question 12

Substances found on the right hand side of a chemical equation

Answer 12

Products

Question 13

One or two letters which represent the name of an element

Answer 13

Symbol

Question 14

Reaction which gives out heat

Answer 14

Exothermic

Question 15

Reaction which takes in heat

Answer 15

Endothermic