I thought everything was good except for the maths, line of best fit and the unknown dyes one. I got the definition of sustainable development e.g sustainable development is development which meets the needs of the present generation without compromising the ability of future generations to meet their own needs. I got the formulation one...the greenhouse effect one...the crude oil one....the oxygen gas test....the nitrogen and oxide one (i think)...and most of the others. Overall i quite liked it.

Reply 88

jjxshuaa

8

Production of ethanol takes in carbon dioxide?

Original post by leonl888

I said it was a renewable resource

Reply 89

MarkSchemePlz

5

That was part of the question silly. 120Mr = CuSO4

Original post by amitchell03

Did anyone get 120 for an answer lol

Reply 90

14hollot

1

Original post by Paolo3100

did anyone else get 15 for a mole question

yEAHHHHH BOOOOO

Reply 91

roverover12

9

For the nitrogen question did you say that nitrogen is very unreactive nitrogen,from the atmosphere reacts with oxygen because temperatures are extremely high in the engine providing the most suitable conditions for nitrogen react which forms oxides of nitrogen

Original post by HarrietL16

I thought everything was good except for the maths, line of best fit and the unknown dyes one. I got the definition of sustainable development e.g sustainable development is development which meets the needs of the present generation without compromising the ability of future generations to meet their own needs. I got the formulation one...the greenhouse effect one...the crude oil one....the oxygen gas test....the nitrogen and oxide one (i think)...and most of the others. Overall i quite liked it.

Reply 92

14hollot

1

Peakest question

Original post by inayah133

What did people get for the 4 mark question on the mass of dissolved substances?

Reply 93

roverover12

9

I wrote about evaporating the 100cm3 salt water into crystals slowly, and then measuring the mass of the crystals with a scale

Original post by 14hollot

Peakest question

Reply 94

amitchell03

10

Original post by MarkSchemePlz

That was part of the question silly. 120Mr = CuSO4

No way you’re joking, what was you supposed to do after that

Reply 95

antoniayoyo

2

Original post by Paolo3100

how could you identify uknown dyes

When the dyes form spots along the paper the spots that are in the food colouring will line up with the spots produced by the food colouring, which shows that they are in the food colouring

Reply 96

kawabi

7

Filtration is for insoluble solids like sand not dissolved solids like salt

Original post by Dividingjem2

I put filtration

Reply 97

jjxshuaa

8

I said that the greenhouse gases such as carbon dioxide have bonds that are good at absorbing infrared radiation from the sun. This traps the radiation in the atmosphere leading to global warming from the greenhouse effect.

Original post by inayah133

I put that the greenhouse gases don't absorb the incoming short wavelength radiation from the sun. They absorb long wavelength radiation from the sun and re-radiate it in all directions including back to Earth. The longwave radiation is a thermal radiation and so it makes Earth hotter.

Reply 98

birdnerd

14

Nice paper altho the maths was hard (i swear moles is paper 1???)

Reply 99

roverover12

9

You had to talk about long and short wave radiation explicitly
(Original post by jjxshuaa)

I said that the greenhouse gases such as carbon dioxide have bonds that are good at absorbing infrared radiation from the sun. This traps the radiation in the atmosphere leading to global warming from the greenhouse effect.

AQA GCSE Combined Trilogy Chemistry 8464 - Paper 2 - 12th June 2019

Related discussions

Latest

Trending

Trending

Articles for you