[Part 3]-C5- Chemical changes ⚗️ Flashcards
1
Q
What is the difference between concentration 🆚 strength of acids ?
Hint: the amount
A
- the concentration of an acid tells us the amount of acid molecules, in a given volume of solution
- ; the strength of an acid determines whether it completely or partially dissociates/ionises in aqueous solutions.
2
Q
What is a spectator ion ?
Hint: dosen’t…
A
- a spectator ion, is an ion that doesn’t take part in the chemical reaction and is found in solution, both before and after the reaction.
3
Q
- Fill in the gaps: If you dilute a strong acid, the pH ________.
A
- If you dilute a strong acid, the pH increases.
4
Q
In the periodic table, what are the ion charges
A
Group 1: +1
Group 2: +2
Group 3: +3
Group 6: -2
Group 7: -1
5
Q
What is the ion charge and formula of ammonium ?
A
- Charge= +1
- Formula= Nh4+^
6
Q
What is the ion charge and formula of nitrate ?
A
- Charge = -1
- Formula= NO3-^
7
Q
What is the ion charge and formula of sulphate ?
A
- Charge= -2
- Formula= SO4^2-
8
Q
What is the ion charge and formula of carbonate ?
A
- Charge= -2
- Formula= CO3^2-
9
Q
What is the ion charge and formula of hydroxide ?
A
- Charge= -1
- Formula= OH-
