Does sodium react faster or slower with water than calcium does?

Explanation:

sodium reacts rapidly with water unlike calcium which reacts moderately with water by forming hydrogen gas

This is false. Calcium is above sodium in the activity series, and is therefore, more reactive than sodium, yet calcium reacts much more slowly with water than does sodium.

(Hope this helps) Sky

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun

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.