When an atom gains an electron it becomes a positive ion. true or false?

Stage in which a typical star has completely stopped fusion

Ab c or d ? i’m not sure what the answer is

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point