How to learn the element charges for GCSE

Watch this thread
Cherrygrape1234
Badges: 17
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 2 years ago
#1
Hi, how should i effectively learn the charges of the elements that don’t fit the pattern for GCSE chemsitry as I’ve got my mocks in a few weeks
Thanks
0
reply

Ðeggs
Badges: 22
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 2 years ago
#2
Group 1 metals = +1 charge,
Group 2 metals = +2 charge,
Zinc = +2 charge (or Iron is quite commonly used at GCSE, assume any transition metal is +2 is a safe assumption).
Aluminium = +3 charge,
Nitrogen = -3 charge
Oxygen / Sulphur = -2 charge
Group 7 (halogens) = -1 charge.
Ammonium ion NH4+ = +1 charge
NO3 Nitrate (V) - = -1 charge,
SO4 2- / CO3 2- Carbonate (V) / Sulphate (VI) = -2 charge

Look at their group on the periodic table and will the atoms lose or gain electrons, and how many?
Last edited by Ðeggs; 2 years ago
0
reply
DamnBro
Badges: 5
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
Report 2 years ago
#3
You could always seperate them into positive and negative ions and maybe make little flashcard (like the small size) and test yourself little and often before your mock.
The only important thing is that when iron is metioned in the question, it will either be written as Iron (II) meaning it would be Fe+2 or Iron (III) which would be Fe+3

Hope you do well in your mocks
1
reply
Cherrygrape1234
Badges: 17
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report Thread starter 2 years ago
#4
(Original post by DamnBro)
You could always seperate them into positive and negative ions and maybe make little flashcard (like the small size) and test yourself little and often before your mock.
The only important thing is that when iron is metioned in the question, it will either be written as Iron (II) meaning it would be Fe+2 or Iron (III) which would be Fe+3

Hope you do well in your mocks
Thank you so much that is a great idea!!
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest

How confident are you that you'll achieve the grades you need to get into your firm uni?

I think I've exceeded the grades for my university offer (14)
17.07%
I think I've met the grades for my university offer (21)
25.61%
I think I've missed the grades for my university offer (43)
52.44%
Something else (tell us in the thread) (4)
4.88%

Watched Threads

View All