chemistry experiments for children

Results:Neither calciumcarbonatenor orrisrootmixed easily with water,
but the peppermint and the sodiumbicarbonatehelped give the paste the right
consistency.
You will find yourtoothpasteinexpensive and pleasant to use. You may have
to try making it several times, however, before you learnjustthe rightamount
ofwater to use to get the right consistency.

·HOW TO MAKE YOUR OWN VEGETABLE COLORING

Gather these materials:An alcoholburner;*pound ofspinach;1 small beet;

grain alcohol; apot;3 test tubes; a fork; 2 funnels; filterpaper;a glassrod;

and 4 glass jars, 3 of them very small. (Get yourmother'spermission to use the

stove.)

Follow this procedure:1.On the stove, boil the spinach in water forabout 2

minutes. Filter the spinach and waterthrougha funnel lined with filter paper

into a medium or large jar. Place the spinach and any coloringmattercaught in

the filter into one of the small glass jars. Add 1 inch of alcohol to it. Putabout

2 inches of water in the pot. Then put the glassjarin the pot and heat it on the

stove. CAUTION: Keep the flame low because alcohol vapor is flammable.

Allow the water in the pot to simmer, but do not allow the alcohol in thejar

to get hot enough to boil. Keep stirring and squashing the spinach with a glass

rod. After 10 or 15 minutes, strain the spinach, letting the liquid flow into

anothersmall jar. Now filter the liquidthrougha funnel lined with filter paper

into a test tube. If the filter paper separatesoutall or most of the green color,

returnwhatever got caught in the filter paper to the warm alcohol. Repeat the

process of heating and filtering. Otherwise, set the funnel aside, and let the

liquid stand until the alcohol evaporates from it completely. Then add*test

tubefulofwater to the tube, stir with the glass rod, and pour the contents of

the tube intoanothersmall jar. Cover ittightly.: