3 to balance the calciums on both sides of the equation, but only if that balances the Cl on both sides of the equation to because you now have 6 Cl and 3Ca
Hey there!
Chemical changes are changes in object's chemical compounds and chemical compositions, and often can't be reversed.
Here's an example:
If you have a piece of paper and you happen to burn it, that can't be reversed.
In other words, it can't be "un-burned". Nothing can restore it to its previous state.
Hopefully this helped!
An eclipse i’m pretty sure right? Lunar maybe?
Answer: Option A) exothermic
A reaction that releases heat is exothermic
Explanation:
An exothermic reaction is a chemical reaction that occurs spontaneously and brings about the release of energy as reactants particles mix to form products.
An example of a reaction that releases heat is cellular respiration where 1 mole of glucose is oxidized to produce energy. Thus, cellular respiration is an exothermic reaction.