Remember Flashcards
1
Q
Acids react with metal oxides to make what?
A
Acid + Metal oxide —> Salt + Water
2
Q
Acids react with metal carbonates to make what?
A
Acid + Metal Carbonate —> Salt + Water + Carbon Dioxide
3
Q
Water react with metals to make what?
A
Metal + water —> Metal hydroxide + hydrogen
4
Q
Acids react with metals to make what?
A
Acid + Metal —> Salt + Hydrogen
5
Q
What are the general rules for predicting solubility of salts in water;
A
- sodium, potassium, ammonium salts are soluble
- nitrates are soluble
- most chlorides are soluble — except silver chloride
- most sulfates are soluble — except barium sulfate, calcium sulfate
• most carbonates are insoluble — except sodium, potassium, ammonium carbonates
6
Q
Why is CO2 used in fire extinguishers?
A
CO2 more dense than air so sinks into flames and acts as a barrier to stop oxygen getting to the flames.
