Answer:
Ethanol can be boiled safely.
Explanation:
Use a steam bath or hot plate, the ethanol can be boiled as long as you keep the vapors away from any ignition source. This can be done under a hood with a condenser in reasonable safety. Obviously, a steam bath is better.
for b, you will test two leaves, one from a plant kept in the light and one from a plant left in the dark. put the two leaves in boiling water to kill them. put the leaves in a boiling tube with ethanol. wait until all the green color disappears from the leaves. remove the leaves. wash the leaves. spread the leaves out on a white tile. carefully add iodine to the leaves. the leaf exposed to light will turn blue black while the one in dark will remain colorless.
