Answer:
True
Explanation:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Answer:
-1160kj/mol
Explanation:
the reaction is exothermic because heat is released to the environment
Answer:
klklklkllkllklkklkllkl
Explanation:
Cuz thats what you said.. and why not :)
Sled going down is in motion
Sled hitting rock is unbalanced
He flew because the of the sudden stop threw them off