This is a model of a lithium atom. how likely is it that this atom would want to bond with another atom to fill it's outer shell?

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

The mass of an object will be the same on the earth as it is on the moon. need asap