Grade 10 Chem

Types of Compounds

• Ionic Compounds: Metal + non-metals

• Molecular Compounds: Non metals + non metal

Key Differences Between Ionic and Covalent Bonds

Non metal + non metal vs metal + non metal

Indicators of Chemical Change

• Heat/light production

• Precipitate from 2 liquids

• Gas/bubbles

• Odour

• Colour change

Atomic Structure and Ions

Valence Electrons and Ionic Charge

• Elements will gain or lose electrons to get a full outer shell

• 3 or fewer valence electrons: lose electrons

• 5 or more valence electrons: gains electrons

Law of Conservation of Mass

mass of reactants = mass of products

Number of atoms of each element must be the same on both sides + chemical equation