Reactivity is not a physical property because it's a characteristic of a chemical element or compound and is involved in chemical process.
Answer:
you can do a celser lava lamp its really easy, i can give you a link if you need?
Explanation:
Elements in group 1-2, 13-18, the number of valence electrons is related to the group number. For example, in the first group, the alkali metals there is one valence electron, however in group 13, there are 3 valence electrons. Valence electrons are also known as the outershell electrons.
Explanation:
unorganized and unsorted i think this is the answer
Increase in heat, molecules start to escape and it turns to vapor
