2006-12-25 14:19:26 · 6 answers · asked by Jolene 1 in Science & Mathematics ➔ Chemistry
Isn't chalk Calcium Carbonate? If that's true then just try using it as chalk. Although, I might be thinking of another coumpound...sorry.
2006-12-25 14:27:24 · answer #1 · answered by Mike J 3 · 0⤊ 0⤋
Dissolve the eggshells with acid. If bubbles are produced collect the gas and test for carbon dioxide (does it support combustion?) Carbon dioxide is a good indicator for carbonate. Take some of the solution from the dissolved egg shells and evaporate to produce a concentrate. Do a flame test on this solution and look for the characteristic color of calcium (red).
2006-12-25 17:06:49 · answer #2 · answered by rethinker 5 · 0⤊ 0⤋
Soak the egg in some vinegar. The vinegar contains acetic acid and will dissolve the eggshell.
2006-12-25 14:22:12 · answer #3 · answered by penpallermel 6 · 0⤊ 0⤋
Put an acid on it. It releases bubbles of CO2 and dissolves. Kept in vinegar it will seem to go away.
2006-12-25 14:21:19 · answer #4 · answered by science teacher 7 · 0⤊ 0⤋
they feed them back to the chickens to ensure that they lay hardshelled eggs.
how much prove do you need
and why is this so important
everybody knows that eggs are calcium already.
even chickens know that.
2006-12-25 14:28:27 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Add acid.
2006-12-25 17:44:24 · answer #6 · answered by carbon dioxide 2 · 0⤊ 0⤋