This was in my science test just want to see if anyone knows?? the wording is so confusing the relative atomic mass of an element compares the mass of an atom of an element with the mass of an atom of

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride