Some chemicals are released through _________.

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Grades 6, 7 and 8 - Science - Middle School - Chemicals - Helpful and Harmful — practice the complete quiz, review flashcards, or try a random question.

Depending upon how they are controlled, handled and disposed of can make chemicals helpful or harmful. SOME HELPFUL CHEMICALS Antibiotics (such as penicillin) - Helps to fight infections. Sodium Chloride (table salt) - This is an important mineral that the body needs. Cornstarch - This is made from ground corn and contains multivitamins. Vinegar - For cuts and bruises, vinegar acts as an antiseptic. Baking soda (sodium bicarbonate) - Reduces stomach acids that cause indigestion. SOME HARMFUL CHEMICALS The five most harmful chemicals in tap water. Chlorine - Yes, chlorine that is... Show more

Some chemicals are released through _________.