4. the elements beryllium, magnesium, and calcium belong to the alkaline earth metals. they do not
react as rapidly as the alkali metals. look at your diagrams of these elements. explain why they do
not react as rapidly as the alkali metals.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

give me abc and i will get it for u.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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