C5 Chemical changes Flashcards
1
Q
whats the equation for a metal and acid
A
metal + acid -> salt + hydrogen
2
Q
whats the equation for base and acid
A
base + acid -> salt + water
3
Q
whats the equation for a carbonate and acid
A
a carbonate + acid -> salt + water + carbon dioxide
4
Q
what’s sulfuric acids chemical symbol
A
H2SO4
5
Q
what’s hydrochloric acids chemical symbol
A
HCl
6
Q
what’s nitric acids chemical symbol
A
HNO3
7
Q
how do you know if an acid is a strong acid
A
it’s fully ionised
8
Q
how do you know if an acid is a weak acid
A
it’s partially ionised
9
Q
what is oxidation
A
when an atom losses of electrons
10
Q
what is reduction
A
when an ion gains electrons
11
Q
how do you measure PH
A
universal indicator
PH probes
