<span>The answer is - a. Alkali Metal.
</span>They react violently with water to form alkaline solutions. This is because they all have 1 electron in their outer shell and losing 1 electron allows them to have full outer shells, and achieve stability.
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Beryllium fluoride I believe is the correct answer
B) decreasing the reactants particle size
S = d/t
S = 78500/10.5
S = 7,476 Knots
The release of absorption is CHEMICAL CHANGE. A chemical change is a type of change in which a new product is produced. Heat is either released or absorbed during a chemical change, and this heat change indicates the bonds have been broken and rearrange. Do the answer is C. CHEMICAL CHANGE.