Between sour soup, melting of candle wax, rusting, and burning which is not a chemical reaction

When a piece of copper metal is heated in air, it joins together with oxygen in the air (a chemical reaction). Then if the copper is weighed, it is found to have a greater mass than the original piece of metal.

Chose the mathematical formula expressing work.

In what type of reaction does one reactant form two or more products?

Is glass melting a physical or chemical change

As a cake bakes, sodium bicarbonate reacts with acids in the cake. The bicarbonate ion and the anion in the acid change places to make carbonic acid. The carbonic acid then breaks down to produce carbon dioxide bubbles that make the cake rise.

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?