How many elements are involved in the reaction of calcium with water?
2 Answers
Three - Calcium (Ca), Hydrogen (H) and Oxygen (O).
Explanation:
Every element has it's own symbol. This symbol represents one atom of the given element. For example in your equation, Ca just means one atom of Calcium.
The 2 before the
A molecule is a combination of elements (bonded together), i.e.
Therefore in your equation you have three elements present and three molecules present. (Ca itself is not a molecule here as it is not bonded to anything - unlike
Are there not three elements in total...?
Explanation:
And the three elements are calcium metal, hydrogen as its oxide, and oxygen as its hydride....the calcium is oxidized and the hydrogen is reduced.