There are many ways to test and identify metal. The easiest way is observing its color. Also how reflective it is. Other ways would be boiling point, melting point, density, or conductivity of the metal.
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For which of the following activities might you want to hire a chemist?
Answer: D. testing a rock sample for gold content
Which of the following procedures involves a physical change in one of the substances?
Answer: C. separating a salt solution by evaporating the water
Answer:
I think C
Explanation:
because hydrogen on the right side only have two while on the left side it have 4
Answer:
Controls the movement of substances into and out of the cell.
ACIDIC BEHAVIOR OF SOLUTION
