When the experiment is over, how should you clean up your chemicals?Group of answer choicesEmpty the contents of all your test tubes simultaneously down the sink.Empty your test tubes, one at a time, down the drain in the sink.Empty all your test tubes at the same time into the designated waste container.Empty your test tubes, one at a time, into a designated waste container.

To answer this question, you may need to view the safety table in the experiment home page.How should the unknown salts and solutions be disposed of?Group of answer choicesin the heavy metal residue containerin the organic waste containerin the halogenated organic waste containerdown the sink with plenty of water

Where do we dispose of hazardous chemicals?Group of answer choicesBack into the reagent bottles where each came fromIn the sink or trash as long as it is in small undetectable amountsIn the purposely labeled and allocated waste container for the classIn any of the chemical waste containers at the laboratory

a) List three safety precautions that should be taken while performing a chemistry experiment in the laboratory.b) Design a simple experiment to demonstrate the process of water purification.

Should you use a clean pipette tip for each sample?Group of answer choicesNo - we can't waste tipsYes - because changing tips is funNo - they are self-cleaningYes - to avoid contamination

When conducting an experiment on reactions of metals with water, what must be done before you begin?Group of answer choicesclean the surface with sandpaper to remove oxidesclean the surface with a clothallow them to sit in the test tubes for 30 minutes