Question

when atoms get more and more energy, they can ionize. what can happen to a gas as more energy is added to its atoms? as the atoms move faster, the gas can change into a plasma. as the atoms move slower, the gas can change into a liquid. as the atoms move faster, the gas can change into a liquid. as the atoms move slower, the gas can change into a plasma.

Explanation:

When more energy is added to gas - atoms, they move faster and ionize. Ionized gas is plasma. Slower - moving atoms lead to condensation into liquid, not plasma formation.

Answer:

As the atoms move faster, the gas can change into a plasma.