Chemical equations Flashcards
1
Q
Ions I need to know
5
Chemical formulas
A
NH4 + Ammonium Hydroxide OH - Nitrate -NO3 - Carbonate CO3 2- Sulfate SO4 2- NH3 Ammonia Hydrogen Oxygen Chlorine 2
2
Q
What is a risk assessment?
A
Identify all hazards and risk is from each h
How likely it is something cud go wrong how serious it d be if it did happen.
Think of ways to reduce risk.
3
Q
Safety precautions
A
Gloves Low concentration Lab coat Goggles Keep substance away from naked flame.
4
Q
Atoms discovery
A
J J Thomson electrons and pudding + plum pudding model
Rutherford s model -gold foil e most particles went thro =atom mostly empty
Dome deflected more than expected small num d backwards = + charged
Nuclear surrounded by a cloud of - electron
5
Q
Explain Bohr model
A
Cloud around nucleus cause atom to collapse
E can only exist in fixed orbits
Each shell has fixed energy
6
Q
What does peer review mean?
A
Everyone gets chance to see new ideas other scientists check for errors then can use it to develop their work
