Bases
Name a Base
Any that is a hydroxide
Examples: Sodium Hydroxide (NaOH), Calcium Hydroxide(Ca(OH)2)
Name an acid
Any that starts with Hydrogen ends with a acid radical.
Examples: Hydrochloric Acid(HCl), Sulfuric Acid(H2SO4), Nitric Acid(HNO3)
Name a salt
Any salt that begins with a metal and ends with acid radical.
H2 + O2 -----> H2O
2H2 + O2 -----> 2H2O
Metal + Water -----> ?
Metal Hydroxide + Hydrogen Gas
Acid + Base -----> ?
Salt + Water
Metal + Acid -----> ?
Salt + Hydrogen gas
Give two examples on how to make a salt using a chemical reaction
1. acid+ metal-----> salt+hydrogen
2. acid+ metal carbonate----> salt+water+carbon dioxide
3. acid+ base/alkali-----> salt+water
(any of these answers would be correct)
Fe + HCl -----> FeCl + H2
Fe + 2HCl -----> FeCl2 + H2
Mg + HCl -----> __________ + ____________
Finish this equation, remember to balence it.
Mg + 2HCl -----> MgCl2 + H2
We put few drops of universal indicator in a base, what colour will the solution become?
blue or purple
What type of acid is found in your stomach?
Hydrochloric acid.
what are salts used for other than seasoning our foods?
Give two legitimate examples
1.Gymnasts use the salt magnesium carbonate to keep t heir hands dry so that they do not slip on the appa ratus.
2. Calcium sulfate is a salt that is used to make blackboard chalk.
3. Aluminium sulfate is added to dyes to help them stick to fibres.
4. soya seeds are coated with copper sulfate. It stops fungi growing on the seeds when they are planted.
5. Ammonium nitrate is used as a fertiliser to help crops to grow well.
P + O2 -----> P2O5
4P + 5O2 -----> 2P2O5
When Sulfuric acid is poured in to water, is it endothermic or exothermic?
Exothermic
What is the difference of a base and an alkali?
What is the most efficent thing to do if you spill an acid on your skin?
Immediately wash with plenty of cold water, then apply 3% -5% NaHCO3 (baking soda) solution.
What do we call sodium hydrogen carbonate(NaHCO3)in our daily lives?
Baking soda
C4H10 + O2 -----> CO2 + H2O
Hint : 4 places
2C4H10 + 13O2 -----> 8CO2 + 10H2O
What is the product of Carbon dioxide and Sodium Hydroxide?
CO2 + NaOH
Sodium Carbonate and water
Na2CO3 + H2O
Base + Non-metal Oxide -----> ?
Salt + Water
We found out that anything that gets poured in with Sulfuric acid will turn black. What causes this situation?
Deyhydration
If you want two salts to react, what properties do they both need to possess？
They both have to be soluble.
H2SO4 + AlOH ------> AlSO4 + H2O
(Hint: 6 places to add)
3H2SO4 + 2Al(OH)3 -------> Al2(SO4)3 + 6H2O
I felt bad for giving these very very hard questions, so I decided to give this 500 point for free.
-joey :)
thank you joey