GCSE OCR 21st Century Triple Science (CBP1-7) Thread Watch

-sophia-
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#1261
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#1261
I've just realised i put on the last question the formula for Sodium Chloride as NaCl2 is this right??
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olmyster911
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#1262
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(Original post by lyricalvibe)
2 years of experience under my belt

Mmhhmm :yep: p6 is not to bad because it feels like chemistry again and 04 is just equations so just do the workbook for that! But p5, I hate that ****! But to make sure I'm not learning it morning of, I'm doing a long night to complete it tonight :eek: haven't even started-_-
I might spend a long night doing it too, don't have to get up til 10am

Depends if I have motivation though, 'cause there's a lack of that in me these days




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ToLiveInADream
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(Original post by lyricalvibe)
54 for an A*, A48,42B, 36C
LOL 42 FOR A B???? Mate. What are you on..

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Sulfur
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#1264
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#1264
(Original post by lyricalvibe)
54 for an A*, A48,42B, 36C
Guys he's joking :rolleyes:

(Original post by -sophia-)
I've just realised i put on the last question the formula for Sodium Chloride as NaCl2 is this right??
Nope - it's NaCl
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-sophia-
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#1265
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#1265
(Original post by Sulfur)


Nope - it's NaCl
Whooooops, I've made so many stupid mistakes!
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Amyjonesx
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#1266
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#1266
Can someone please explain electric motors to me in detail? My revision guide makes no sense and its way too vague! Im stressing out
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LouiseDB42
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#1267
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#1267
(Original post by -sophia-)
I've just realised i put on the last question the formula for Sodium Chloride as NaCl2 is this right??
Sodium chloride is NaCl, just one of each because Na has a 1+ charge and Cl has a 1- charge, so you only need one of each to make a neutral compound

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Sulfur
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#1268
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#1268
(Original post by -sophia-)
Whooooops, I've made so many stupid mistakes!
I'm in the exact same position :/
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lyricalvibe
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#1269
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#1269
(Original post by Fyt)
C does not produce a white precipitate on both. This is because c was barium chloride which only detects sulfates and there are no sulfate ions in hydrochloric acid.


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That's already been established.




(Original post by Kitty260)
What no way they are high!

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(Original post by Swag>education)
Loooool are you high they will never be that high EVER
(Original post by azo)
Is that a joke?
It will be 46 maximum for A*
(Original post by ToLiveInADream)
LOL 42 FOR A B???? Mate. What are you on..

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(Original post by Sulfur)
Guys he's joking :rolleyes:



Nope - it's NaCl
Seriously, how low do you think the grade boundaries are? That's the standard 90% A*,80% A and so on system :confused:
Spoiler:
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jk 40 A*,34 A, 25B, 17 C
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Sulfur
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#1270
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#1270
(Original post by lyricalvibe)
Seriously, how low do you think the grade boundaries are? That's the standard 90% A*,80% A and so on system :confused:
Spoiler:
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no 40 A*,34 A, 25B, 17 C
I agree with the boundaries in the spoiler.
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Swag>education
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#1271
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#1271
(Original post by LouiseDB42)
Sodium chloride is NaCl, just one of each because Na has a 1+ charge and Cl has a 1- charge, so you only need one of each to make a neutral compound

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What if you put 2NaCl
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Wild.Violets
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#1272
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#1272
(Original post by lyricalvibe)
I'm making comprehensive questions for each page in P5, anyone interested in spoiler answers just say
What happens when I rub a polyethylene rod and a cloth duster?what is the force causing this?
True or false: protons being scraped off and onto another substance gives the other substance a charge?
When I remove and donate electrons I turn the prior materialsc atoms into ___?
Explain static electricity with reference to two insulating materials being rubbed?
What are the rules of attraction and repulsion?
Give 3 examples of static electricity build up?
Cgp book page 1 for p5
Ooh spoiler answers, please
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LouiseDB42
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#1273
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#1273
(Original post by Swag>education)
What if you put 2NaCl
Not sure...technically the formula itself is correct so I don't see why not I can't remember the context of the question exactly so I couldn't say whether the 2 would be needed or not but I doubt it would lose you the mark

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lyricalvibe
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#1274
(Original post by Wild.Violets)
Ooh spoiler answers, please
I'm aiming to finish writing questions by sleep and do answers in the morning
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superdarklord
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#1275
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#1275
(Original post by Amyjonesx)
Can someone please explain electric motors to me in detail? My revision guide makes no sense and its way too vague! Im stressing out


The motor effect is when a current carrying wire experiences a force when placed in a magnetic field. So they put a current carrying coil of wire in a magnetic field, and it experiences a force which causes it to turn. It's on a spindle so it rotates. So that it keeps rotating in the same direction, every half turn, a split ring commentator swaps the contacts which changes the current going through the wire. This keeps it moving in one direction.

That's a motor - converts electrical energy to kinetic energy.

Due to the rotating motion, an axle can be attached and this is how electric cars' wheels spin and how the disk spins on a dvd player and in kitchen appliances and stuff


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Teecesay
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#1276
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#1276
(Original post by lyricalvibe)
54 for an A*, A48,42B, 36C
That would never be the grade boundary.


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User1452521
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#1277
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#1277
(Original post by Teecesay)
That would never be the grade boundary.


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39-45 /60 for an A *, no one will know till the week before results week


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Studygeek16
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#1278
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#1278
Hey, has anyone started p456 revision?
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Sulfur
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#1279
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#1279
(Original post by Studygeek16)
Hey, has anyone started p456 revision?
I've wrote my notes up, but apart from that not really. I'm doing it today.
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lyricalvibe
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#1280
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#1280
how's everyones revision going?
i've just finished p5 :dancing: :evilbanana: and now p6
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