2.3Atoms and molecules
Matters are a substance which have ________________ and occupies ________________
_____________: substance that cannot be split into anything simpler, in a chemical reaction. Each
element has a unique proton number.
_____________: two or more elements mixed together but not chemically combined
________________: substance in which two or more different elements are chemically combined.
4) _______________:The smallest particles that we cannot break down further by chemical means.
5) ______________ consist of two or more atoms joined together.
6) In other substances the particles consist of atoms or groups of atoms that carry a charge. These
particles are called ___________. Potassium manganate(VII) is made of ions.
ATOMS
ELEMENTS
MOLECULES
MATTER
MOLECULES
COMPOUNDS
IONS
QUESTIONS
Substances
Potassium
Sodium hydroxide
Lead
Chlorine
Zinc bromide
Hydrogen
Iron
Iron sulfate
Magnesium
Nitrogen
Bromine
Aluminium oxide
Element
Compound
Atom
Molecule
Ion