Tutor Niedino: Pri Science Questions and Concepts

[Niedino]

buds:

Hi Niedino, once you have compiled misconceptions for one full topic..

I can direct you to create your own blog right here in KiasuParents.com.
Lemme know okie?

Thanks buds,

Now's the busy period, so gotta wait till the hols to do some updating.

niedino

[Niedino]

jesschan:

Niedino:

Hi moderators and monitors,


I was looking through the posts and it has deviated somewhat from my original intentions. I was and am still a newbie at forum posting. I find it a little difficult now to post up new misconceptions about Science as I do not want them get lost. Should I blog or submit articles instead?

Hi! I am not a moderator or monitor but I think blogging is neater and people can just post questions when in doubt.

Btw, I sent you a PM, not sure if you received it?

Hi Jesschan,

Got your pm and replied to it.

Thanks

[buds]

Niedino:

buds:

Hi Niedino, once you have compiled misconceptions for one full topic..

I can direct you to create your own blog right here in KiasuParents.com.
Lemme know okie?

Thanks buds,

Now's the busy period, so gotta wait till the hols to do some updating.

niedino

No worries.. No worries.. Whenever you're ready. :love:

[Niedino]

buds:

Niedino:

[quote=\"buds\"]Hi Niedino, once you have compiled misconceptions for one full topic..

I can direct you to create your own blog right here in KiasuParents.com.
Lemme know okie?

Thanks buds,

Now's the busy period, so gotta wait till the hols to do some updating.

niedino

No worries.. No worries.. Whenever you're ready. :love:[/quote]Thanks Buds,

BTW, I do have a quite a few misconceptions to share so perhaps you can start showing me how to blog and I'll start blogging in my free time?

Thanks

[Niedino]

Dear all,


Thanks for the encouragement and support. I have posted my first blog entry in the Kiasuparents forum, titled - Science Misconceptions: An Overview

Here's the link to the first posting.
http://www.kiasuparents.com/kiasu/blogs/niedino

I'll try to share more in the near future and tag to topics.

Hope this will be helpful.

[anneshirleygilbert]

Hello Everyone,


I need some help in crafting a comprehensive answer to this question:
"What is a control set-up in an experiment? and what is its purpose?"

I’ve not read anything from Niedino for a long time. Would really appreciate her input.

Sincerely,
Anne

[thensingsmysoul]

anneshirleygilbert:

Hello Everyone,


I need some help in crafting a comprehensive answer to this question:
\"What is a control set-up in an experiment? and what is its purpose?\"

I've not read anything from Niedino for a long time. Would really appreciate her input.

Sincerely,
Anne

Control set-up in an experiment has the exact same conditions as the experimental setups except for the tested variable( changed variable).

Purpose:
To ensure that any changes/difference in the (variable changed/result of the experiment) is due only to the (changed variable) and not due to other variables/factors.

E.g.
Aim of experiment: To find out if the presence of wind affects the rate of evaporation.
CV: presence of wind
Variable measured: amount of water left in a container at the end of the experiment

Control set-up:
Container left in a location without exposure to wind

Purpose of control set-up:
To ensure that any changes in the amount of water left in the container at the end of the experiment(or \"any difference in the rate of evaporation\") is only due to the presence of wind and not due to other variables.

Hope this helps.

Regards,
KC

[Niedino]

anneshirleygilbert:

Hello Everyone,


I need some help in crafting a comprehensive answer to this question:
\"What is a control set-up in an experiment? and what is its purpose?\"

I've not read anything from Niedino for a long time. Would really appreciate her input.

Sincerely,
Anne

Hi Anne,

My apologies for the really late response, I've been pretty busy with my work and with the shifting of the forum topics, I got lost initially. I'll try to visit the forum as much as possible. Actually KC provided a very detailed explanation. :goodpost: In the primary school syllabus, a control is basically a setup that has the exact same conditions as the experimental setup, except for the change in one variable, the independent variable or the cause. This is to ensure that the experiment's findings are reliable and due to the independent variable or in other words, the effect is due to the cause.

Do note, many students often write that the reason for having a control is to have a fair test. This is a misconception. Having only one variable changed is to have a fair test. Having a control setup is to ensure that your results are reliable. Repeating the experiment is to reduce the chance of human error.

Hope it helps!

[Niedino]

Dear Parents


I have just posted some tips on my blog on how to answer Section B questions. Unfortunately, its not been posted on the main page yet. Here's the link. http://www.kiasuparents.com/kiasu/conte ... -questions

Here's my tutor profile on kiasuparents which has been verified by ChiefKiasu. http://www.kiasuparents.com/kiasu/conte ... ng-niedino

I have helped many pupils to improve in their Science during this year's PSLE.

I have some classes opening in 2012, if you and other parents are interested, you may want to drop me an email at [email protected] or pm me for my contact details.

You may also wish to join my mailing list (which I'll start once there are enough interested parents).

Hope it helps

Niedino

[Pebblesrock]

Why does the electrostatic force of attraction decreases when the size of the ion decreases whereas when the molecules get bigger in a covalent compound, the intermolecular force of attraction increases? It sounds contradicting.