drop any Doubts in IGCSE Physics, Chemistry and Biology Here

[Igcse stuff]

five months is more than enough if you are serious

 

[Igcse stuff]

how can you explain this chemistry question (b)

 

[Igcse stuff]

can someone also help explain this biology question, 2.(c)i and (c)ii

 

[Fatima18]

how can you explain this chemistry question (b)

Use a full bottle to begin with.Connect the barrel of syringe and a delivery tube attached to it.Heat the bottle until no more gas is given off.Lastly, measure the volume of gas.

 

[bilalmalik1997]

But u must be having a general idea about the subjects?If so, then yes..It is enough.

general idea? yea that i do have. what time should i give to each subject a day?

 

[Fatima18]

can someone also help explain this biology question, 2.(c)i and (c)ii

2ci)
So to begin with,apply the test of starch since its a type of carbohydrate.Add iodine solution and if it contains starch it will turn from brown to bluish-black.Secondly, for the other type of carbohydrate, apply the test of reducing sugar.Crush the banana and mix it with water.Add the benedict's solution and heat it up.
Lastly, to gain the other marks use the safety equipment like goggles, lab coat etc.
c1ii)Observations-presence of starch will change it to blue colour..Presence of reducing sugar-will change it to red.
Hope that helps you!

 

[Fatima18]

general idea? yea that i do have. what time should i give to each subject a day?

Then its more than enough...1 hr 15 mins for each subject every day would be more than enough if its for five months.But it also depends on hw much concentration you're giving and how fast you are in catching up things.So, try it for a week..If u think its less or more, you can change it according to your pace.

 

[bilalmalik1997]

Then its more than enough...1 hr 15 mins for each subject every day would be more than enough if its for five months.But it also depends on hw much concentration you're giving and how fast you are in catching up things.So, try it for a week..If u think its less or more, you can change it according to your pace.

seriously u look like uve been studying since u were a small kid how do u study WITH CONCENTRATION? i dont get it wen people say that!

 

[Fatima18]

seriously u look like uve been studying since u were a small kid how do u study WITH CONCENTRATION? i dont get it wen people say that!

Lol... ...setting up a good environment(comfortable one) and then forcing entirely on what ure studyin.

 

[Igcse stuff]

2ci)
So to begin with,apply the test of starch since its a type of carbohydrate.Add iodine solution and if it contains starch it will turn from brown to bluish-black.Secondly, for the other type of carbohydrate, apply the test of reducing sugar.Crush the banana and mix it with water.Add the benedict's solution and heat it up.
Lastly, to gain the other marks use the safety equipment like goggles, lab coat etc.
c1ii)Observations-presence of starch will change it to blue colour..Presence of reducing sugar-will change it to red.
Hope that helps you!

now for reducing sugars, of-course your supposed to mix it with water but are you also supposed to mention the amount that you are going to put in the test tube which normally between 1-2cm^3.
Yeah, it's helping, thanks for both questions

 

[Igcse stuff]

2ci)
So to begin with,apply the test of starch since its a type of carbohydrate.Add iodine solution and if it contains starch it will turn from brown to bluish-black.Secondly, for the other type of carbohydrate, apply the test of reducing sugar.Crush the banana and mix it with water.Add the benedict's solution and heat it up.
Lastly, to gain the other marks use the safety equipment like goggles, lab coat etc.
c1ii)Observations-presence of starch will change it to blue colour..Presence of reducing sugar-will change it to red.
Hope that helps you!

by the way, in biology ATP when you are told to plot a graph of best fit, are you supposed to always draw a curve of best fit or you can also plot a straight line of best fit cause these things are confusing at times.

 

[Fatima18]

now for reducing sugars, of-course your supposed to mix it with water but are you also supposed to mention the amount that you are going to put in the test tube which normally between 1-2cm^3.
Yeah, it's helping, thanks for both questions

As far as I know, mentioning that isn't necessary.

 

[Fatima18]

by the way, in biology ATP when you are told to plot a graph of best fit, are you supposed to always draw a curve of best fit or you can also plot a straight line of best fit cause these things are confusing at times.

I was confused about the same thing...I heard that you're just supposed to join the points...best fit is supposed to be done when the instructions ask you to...I'm not sure either...If u get to know a reliable answer to the question for both, bio and chem graphs atp.let me know as well.Thanks

 

[Igcse stuff]

i'll let you know, thanks.

 

[bilalmalik1997]

Lol... ...setting up a good environment(comfortable one) and then forcing entirely on what ure studyin.

ill tryyy

 

[champ-student]

are five months enough to practice igcse physics, chem and maths? p.s. i havent studied any of it befoore!

welll....i m taking thezz subjects.......at school nd they've planned to study sciences for 2 yearzzzz....so....???

 

[koko288]

plz
june12 paper 32 page 5 the two questions i need help physics

 

[champ-student]

ye

plz
june12 paper 32 page 5 the two questions i need help physics

year???????

 

[b-boy]

hey guys.... i am having a problem in igcse chemistry paper 3 of june 2003 .....can anybody solve question 2 part c? any help would be appreciated .....

 

[koko288]

ye
year???????

I wrote june 12 plz help