Chemical Changes Flashcards
1
Q
What is 7 on the PH scale?
A
Neutral
2
Q
Is PH 0 acid of alkaline?
A
Strong acid
3
Q
What PH is water?
A
7
4
Q
What is the reaction called between an acid and a base?
A
Neutralisation
5
Q
What is titration used for?
A
Finding out concentrations
6
Q
Is PH5 to PH4, divide by 10 of times by 10?
A
Times by 10
7
Q
What is reduction?
A
Removing oxygen from a metal oxide
8
Q
Copper+oxygen=?
A
Copper oxide
9
Q
Calcium+oxygen=?
A
Calcium oxide
10
Q
What 3 acids are used in neutralisation?
A
Hydrochloric acid, sulphuric acid, nitric acid
11
Q
What three bases are used in neutralisation?
A
Metal Oxide, metal hydroxide, metal carbonate
12
Q
What is a strong acid?
A
An acid which fully dissociates to form H+ ions in an aqueous solution
