20 points Do you think that every substance can be separated
physically or chemically into other substances? Explain your
answer.

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

Which of the following best describes the formation of plasma?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy