Back
to top
Additional science b4 c4 p4 OCR
Watch this thread
Announcements
Page 1 of 1
Go to first unread
Skip to page:
workaholic.ok
Badges:
10
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
I'm very curious so whatever question you remember comment it and any you need help with. I'll start, what did you get for an isotope?
Posted from TSR Mobile
Posted from TSR Mobile
0
reply
Moppet
Badges:
13
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
an isotope is an element with the same atomic number but a different mass number
Which questions can you remember from B4?
Which questions can you remember from B4?
0
reply
workaholic.ok
Badges:
10
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
(Original post by Moppet)
an isotope is an element with the same atomic number but a different mass number
Which questions can you remember from B4?
an isotope is an element with the same atomic number but a different mass number
Which questions can you remember from B4?
Posted from TSR Mobile
0
reply
Moppet
Badges:
13
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
#4
I can remember:
Explain which mite she should choose and why (2 marks)
Estimate the number of mites (1 mark?, or was it two?)
Give reasons why this estimate is not accurate (2)
What are the advantages/disadvantages of using pesticides? (2 marks)
Explain the results in test tube B, with no phosphate (2 marks)
Explain why bubbling oxygen through the test tube would make the plant grow faster (3 marks)
Agar Jelly and Diffusion (6 marks)
Explain why the epidermis is transparent (2 marks)
Explain why the stomata is located at the bottom (3 marks or 2?)
Explain why starch is stored instead of sugar (2 marks)
Please let me know if this is correct because I am desperate to see how many marks I got
Explain which mite she should choose and why (2 marks)
Estimate the number of mites (1 mark?, or was it two?)
Give reasons why this estimate is not accurate (2)
What are the advantages/disadvantages of using pesticides? (2 marks)
Explain the results in test tube B, with no phosphate (2 marks)
Explain why bubbling oxygen through the test tube would make the plant grow faster (3 marks)
Agar Jelly and Diffusion (6 marks)
Explain why the epidermis is transparent (2 marks)
Explain why the stomata is located at the bottom (3 marks or 2?)
Explain why starch is stored instead of sugar (2 marks)
Please let me know if this is correct because I am desperate to see how many marks I got
0
reply
Moppet
Badges:
13
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
Report
#5
For C4:
What group and period is this element in? (2 marks)
Draw a dot and cross diagram for the bonding of HCL (1 mark)
Draw a dot and cross diagram for the ionic bonding of sodium chloride (2 marks)
Process of water purification (6 marks)
Balance the symbol equation of HCL (2 marks)
What is an isotope? (2 marks)
Predict the melting point (and something else?) of the elements/halogens in the table (2 marks)
What type of reaction is this (or was it why do reduction and oxidation happen in this displacement reaction of bromine) 2 marks
What group and period is this element in? (2 marks)
Draw a dot and cross diagram for the bonding of HCL (1 mark)
Draw a dot and cross diagram for the ionic bonding of sodium chloride (2 marks)
Process of water purification (6 marks)
Balance the symbol equation of HCL (2 marks)
What is an isotope? (2 marks)
Predict the melting point (and something else?) of the elements/halogens in the table (2 marks)
What type of reaction is this (or was it why do reduction and oxidation happen in this displacement reaction of bromine) 2 marks
0
reply
Moppet
Badges:
13
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#6
Samosa and Vada
Badges:
13
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#7
Report
#7
Stop worrying. The grade boundaries are always so low for this paper. And I think looking at this paper it will be low this year as well.
0
reply
hira981
Badges:
9
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#8
Report
#8
(Original post by Moppet)
For C4:
What group and period is this element in? (2 marks)
Draw a dot and cross diagram for the bonding of HCL (1 mark)
Draw a dot and cross diagram for the ionic bonding of sodium chloride (2 marks)
Process of water purification (6 marks)
Balance the symbol equation of HCL (2 marks)
What is an isotope? (2 marks)
Predict the melting point (and something else?) of the elements/halogens in the table (2 marks)
What type of reaction is this (or was it why do reduction and oxidation happen in this displacement reaction of bromine) 2 marks
For C4:
What group and period is this element in? (2 marks)
Draw a dot and cross diagram for the bonding of HCL (1 mark)
Draw a dot and cross diagram for the ionic bonding of sodium chloride (2 marks)
Process of water purification (6 marks)
Balance the symbol equation of HCL (2 marks)
What is an isotope? (2 marks)
Predict the melting point (and something else?) of the elements/halogens in the table (2 marks)
What type of reaction is this (or was it why do reduction and oxidation happen in this displacement reaction of bromine) 2 marks
I wrote they all have 7 electrons in outer shell
0
reply
workaholic.ok
Badges:
10
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#9
(Original post by hira981)
it was one about why group 7 elements have similar chemical properties
I wrote they all have 7 electrons in outer shell
it was one about why group 7 elements have similar chemical properties
I wrote they all have 7 electrons in outer shell
Posted from TSR Mobile
0
reply
hira981
Badges:
9
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#10
Report
#10
(Original post by workaholic.ok)
I wrote they have strong intermolecular forces and high melting points and boiling
Posted from TSR Mobile
I wrote they have strong intermolecular forces and high melting points and boiling
Posted from TSR Mobile
0
reply
hira981
Badges:
9
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#11
Report
#11
(Original post by workaholic.ok)
I'm very curious so whatever question you remember comment it and any you need help with. I'll start, what did you get for an isotope?
Posted from TSR Mobile
I'm very curious so whatever question you remember comment it and any you need help with. I'll start, what did you get for an isotope?
Posted from TSR Mobile
I wrote the plant cells are respiring to turn glucose into chemical energy in the plant
more auxins
0
reply
hira981
Badges:
9
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#12
Report
#12
(Original post by workaholic.ok)
I wrote they have strong intermolecular forces and high melting points and boiling
Posted from TSR Mobile
I wrote they have strong intermolecular forces and high melting points and boiling
Posted from TSR Mobile
for x-rays i said
high frequency and short wavelength so are exposed to tissue cells and so cause cancer in cell and then they multiply and divide
for ultra sound
I don't remember but it was about an image
0
reply
hira981
Badges:
9
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#13
Report
#13
(Original post by Moppet)
an isotope is an element with the same atomic number but a different mass number
Which questions can you remember from B4?
an isotope is an element with the same atomic number but a different mass number
Which questions can you remember from B4?
0
reply
workaholic.ok
Badges:
10
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#14
(Original post by hira981)
what about for physics the alpha and beta radiation i wrote its the most ionising and would attract to materials with positive atoms or something like that
for x-rays i said
high frequency and short wavelength so are exposed to tissue cells and so cause cancer in cell and then they multiply and divide
for ultra sound
I don't remember but it was about an image
what about for physics the alpha and beta radiation i wrote its the most ionising and would attract to materials with positive atoms or something like that
for x-rays i said
high frequency and short wavelength so are exposed to tissue cells and so cause cancer in cell and then they multiply and divide
for ultra sound
I don't remember but it was about an image
Posted from TSR Mobile
0
reply
X
Page 1 of 1
Go to first unread
Skip to page:
Quick Reply
