AQA GCSE Atomic Structure & Periodic Table

Define atom

• A substance made of only one type of atom
• Smallest indivisible unit of an element
• 2 or more elements bonded together
• 2 or more elements bonded together (can be atoms of the same type!)

Define element

• Smallest indivisible unit of an element
• A substance made of only one type of atom
• 2 or more elements bonded together
• 2 or more elements bonded together (can be atoms of the same type!)

Define isotope

• An element with a different number of neutrons

• An element that has gained or lost protons

• An element with a different number of protons

• An element that has gained or lost electrons

Define compound

• 2 or more elements bonded together
• 2 or more elements bonded together (can be atoms of the same type!)
• Smallest indivisible unit of an element
• Smallest indivisible unit of an element

Define molecule

• 2 or more elements bonded together (can be atoms of the same type!)
• Protons, neutrons, electrons
• 2 or more substances NOT bonded together
• A small fruit

Define ion

• An element with a different number of neutrons

• An element that has gained or lost protons

• An element with a different number of protons

• An element that has gained or lost electrons

State the three subatomic particles

• Protons, neurones, electrons
• Pions, neutrons, electrons
• Protons, neutrons, electrons
• Protons, neutrons, positrons

State the masses of the subatomic particles

• p = 1, n = 0, e = 1
• p = -1, n = 1, e = 0
• p = 1, n = 1, e = 0
• p = 1, n = -1, e = 0

State the relative charges of the subatomic particles

• p = +1, n = 0, e = -1
• p = 0, n = +1, e = -1
• p = -1, n = 0, e = +1
• p = 1, n = 0, e = 1

How are the subatomic particles arranged in an atom?

• Protons and neutrons in nucleus, electrons in shells
• Protons and electrons in nucleus, neutrons in shells
• electrons and neutrons in nucleus, protons in shells
• Protons and neutrons in nucleus, electrodes in shells