Chemistry, 15.07.2019 21:30, unkownperson030
Jenny and mark complete a reactivity experiment by placing samples of metals into water. they initially place small shards of potassium into water and observe that hydrogen gas and potassium hydroxide solution are produced. to complete a second experiment, they place large cubes of potassium into water and observe the reaction again. assuming the same amounts of potassium and water were used in each experiment, do you expect their observations about the products formed and reaction rate to be the same? explain your answer.
Answers: 1
Chemistry, 21.06.2019 15:00, chhimmidemg
How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.
Answers: 2
Chemistry, 22.06.2019 13:20, alejandra340
Can someone me with 3 and 4 plz. this is for masteries test.
Answers: 2
Chemistry, 22.06.2019 22:00, shaylasimonds587
The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?
Answers: 2
Jenny and mark complete a reactivity experiment by placing samples of metals into water. they initia...
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