Acids and Alkalis Flashcards
1
Q
indicator
A
a substance that changes color to show if something is an acid or a alkali
2
Q
alkali
A
A substance with a ph more than 7
3
Q
acid
A
A substance with a ph less than 7
4
Q
why did we add an excess of copper oxide?
A
to ensure all of the acid reacted
5
Q
exothermic reaction
A
chemical reaction that gives off heat
6
Q
weak acid
A
ph 4 to 6
7
Q
strong alkaline
A
ph 12 to 14
8
Q
strong acid
A
ph 1 to 3
9
Q
weak alkaline
A
ph 8 to 11
10
Q
acid + alkali
A
salt + water
11
Q
acid + metal oxide
A
salt + water
12
Q
acid + metal carbonate
A
salt + water + carbon dioxide
13
Q
test for hydrogen
A
pops if a lighted splint is brought near it
14
Q
test for carbon
A
turns limewater cloudy
15
Q
test for oxygen
A
relights a glowing splint
