AQA GCSE Chemistry Revision Quiz

What is the smallest part of an element that can exist?

• Compound

• Electron

• Atom

• Molecule

Which method is used to separate a mixture based on boiling points?

• Chromatography

• Crystallization

• Distillation

• Filtration

Which scientist is credited with the plum pudding model of the atom?

• Niels Bohr

• Ernest Rutherford

• J.J. Thomson

• John Dalton

What property do all elements in the same group of the periodic table share?

• Same number of protons

• Same atomic mass

• Same number of electrons in their outer shell

• Same number of neutrons

What is the outcome when potassium reacts with water?

• Formation of potassium oxide

• No reaction occurs

• Formation of a salt

• Release of hydrogen gas

Which group in the periodic table contains elements that are all gases at room temperature?

• Transition metals

• Noble gases

• Alkali metals

• Halogens

What is the main reason metals are good conductors of electricity?

• Ductility

• Malleability

• Presence of delocalized electrons

• High melting points

Which type of bonding involves the transfer of electrons from one atom to another?

• Hydrogen bonding

• Ionic bonding

• Metallic bonding

• Covalent bonding

What property of diamond makes it very hard?

• Each carbon atom forms four strong covalent bonds

• The molecular lattice structure

• Each carbon atom forms two strong covalent bonds

• The presence of delocalized electrons

Why can graphite conduct electricity?

• It has ionic bonds

• Because it has free electrons

• Due to its layered structure

• All electrons are bonded