b) The reactivity of alkali metals increases as atomic mass increases.
Answer:
Explanation:
A substance with a high specific heat, such as the water in Figure 9, heats up and cools down slowly because a much larger quantity of heat is required to cause its temperature to rise or fall by the same amount. Matter can change from one state to another when thermal energy is absorbed or released.
It has an ultramafic composition
Hope this helps ;)
Its Na20
the formula for sodium oxide
