Science Experiments

Posts Tagged ‘tutorial’

Question: How much calcium carbonate is there in limestone ?

I have to do an experiment for school (for chemistry more specifically) and have to do the research ourselves. I want to know how do you find out how much calcium carbonate is there in a limestone. What are the apparatus used and what is the procedure ? I need this info to write up the lab report. Any help will be appreciated.

Answer: While the first answer is essentially correct, limestone IS calcium carbonate, it is NOT pure calcium carbonate. most limestones contain other materials such as magnesium carbonate and silica. You can measure total carbonates by titration with an acid such as HCl. Alternatively, you can dissolve the limestone in a strong acid such as HCl or H2SO4 and then determine any residue left by weight.

Chemistry Music Video 1: The Scientific Method

Question: Would a ammeter work for an experiment that requires a micro-ammeter?

I wanted to do this experiment I found online where you create a simple solar cell in your kitchen. I went and bought the ammeter we need for it (which cost me 40 bucks) but then i realized it requires a micro-ammeter. Would my experiment still work or can u suggest other experiments using an ammeter. It for our eighth grade science fair and I want to win!
I bought it online so it would be pretty hard to exchange it and the experiment expects 50 micro-amps while my ammeter is a 0-50 scale

Answer: It just depends on the range(s) of the ammeter and the current you are expecting from your solar cell. So long as the current from the solar cell is large enough to register on your ammeter then you should be fine.

Root Vegetable Cannon – Kitchen Science

Question: I need a step by step experiment for a science fair project.?

Answer: You have to find something you like to do first so that you can really get into the assignment. It’s hard to pick a project out of the air.

Start here:

http://www.sciencebuddies.com/

There is a topic selection wizard that will help you pick.

Science Experiment For Kids (ASL)