Perhaps they try to keep it simple for pr school's English.


Remember we were taught I/We shall and he/she/they/anyone else will? (or something like that?)

think "If I was…’ is also applicable sometimes!

don’t really like the china ones coz of the sour after-taste. but I believe they have more medicinal value (cooling) than the holland type.

in this case, the brown gas only became DILUTED when combined with the air. Similarly air did not disappear or compressed to zero volume. The TOTAL volume before and after the removal of the cardboard did not change.

(b) so that moisture will be allowed to evaporate and not trapped (in the box).

atutor2001:

Hi tianzhu


The meaning of \"setting\" is bugging me. From the dictionary, there are many meanings and I have listed the relevant ones :

1. the position or adjustment of something, as a dial, that has been set
2. the time, place, environment, and surrounding circumstances of an event, story, play, etc.

From the meaning of \"setting\", it appears that the question would not allow the environment or positions of any of the components in the set-up to be changed.

However, can we then add new things to the set-up such as black paper or vaseline?

Not sure what is your opinion?

Regards

it'll be really interesting to see what's the school's answer. here we have so many parents struggling with both the science and english aspects of the qn!

watmekiasu:

i - pluck out all the leaves

A typical answer from a GEPer!

MdmKS:

Got this problem from my P3 child worksheet.


A conical flask contain some water and a plant with its roots submerged in the water. A stopper is fixed at the mouth of the flask holding the stem of the plant with its leaves hanging outside the conical flask. Sorry, I am not sure how to upload the image file here.
Question : how to reduce the rate of water being absorbed by the roots? Give 2 methods, without changing the setting of the experiments.

T!A

for plants, i believe the answers will always revolve around water, air & sunlight. the answer is probably to reduce the (i) sunlight & (ii)CO2 which will slow down photosynthesis (sun + CO2 + water = starch). Not sure how this can be achieve, tho. :oops:

Dharma:

The answer is Option C – B & C

# Although air can be compressed but the experiment does not demonstrate this property of air.

agreed with u on this as the demo is now complete.

i dun think it's inconclusive to say it is compressible coz both the air + the brown gas still occupy the same combined volume

Q1 - my take is air & steam. I consider water vapour as water droplets at less than 100degC.


My kids were asking me similar qn, ie, how come water is in gaseous state in the air when it’s not 100degC. How to answer this?

Q2 - just went thru my son’s sce file yesterday and remember vividly it’s yolk. no mention of egg white.