Topic 1 + 2
Outline the difference between ionic and covalent bonding
Ionic = electrons transfered, metal + non metal
Covalent = electrons shared, non metal + metal
Difference between metal and non-metals
What does atomic number represent
metals are shiny, conductive, malleable; non-metal are dull, brittle and poor conductors
Number of protons
List subatomic particles
Proton, Neutron, Electron
Who discovered the nucleus
Explain Dalton's atomic theory
Ernest Rutherford
Matter is made of atoms; atoms of the same element are identical; atoms combine in fixed ratios
Why ionic compounds for between metals and non metals
Metals lose electrons and non-metals gain them. Create opposite charges that attract
Rutherford gold foil experiment
Explain how Bohr improved the atomic model
Electrons move in specific energy levels around the nucleus
How do we smell chemicals?
Give two pieces of lab safety
fan vapour towards nose
goggles, apron, and gloves
Keep away from open flames/heat sources