Reaction to acids Flashcards
What is the ph of water
7
What is the ph of a strong acid
1,2,3
What is the ph of a strong alkali
12,13,14
What is the ph of a weak acid
5,6
What is the ph of a weak alkali
8,9
True or false acid melts your skin bc it corrosive not alkali
False they Both are corrosive
Name 3 neutral substances
Water ,blood and saliva
Is hydrochloric acid and acid or alakli
Acid duh
What colour is a strong acid(ph)
Red
What colour is a strong alkali (ph)
Purple
Equation :)
Metal + acid —>salt + hydrogen
More equations (v=v)
- Calcium + hydrochloric acid –> calcium
chloride + hydrogen - Sodium + hydrochloric acid –> sodium
chloride + hydrogen - Copper + sulphuric acid –> copper sulphate +
hydrogen
Name the short versions of these :
Solid
Liquid
Gas
Aqueous
(s)
(l)
(g)
(aq)
Complete the word equation lithium +nitric acid —>?+?
Lithium nitrate +hydrogen
What chemicals are these:
HCl
NaOH
1) hydrochloric acid
2)sodium hydroxide
What will happen to limewater when co2 is present
Becomes cloudy
How to test for oxygen
In the test to identify oxygen, a glowing splint is used. The splint is held at the open end of a test tube. The glowing splint will relight if it contains oxygen.
How to test if there is hydrogen
Place a lighted splint in a test tube containing the gas. If the gas is hydrogen, there will be a squeaky pop.
How to test if there is water Vapor
Water or its vapour will turn cobalt chloride paper from blue to pink.
