Chem questions!! please help! :)?

1. A chemical formula represents...

1- qualitative information only

2- quantitative information only

3- both quantitative and qualitative information

4- Neither qualitative or quantitative information

An empirical formula represents

1- qualitative info only

2- only the metallic elements in the compound

3-the lowest integer ratio of the elements in a compound

4- a multiple of the simples ratio of the elements in a compound

In an endothermic reaction

1- energy is a product and the surrounding temperature decreases

2- energy is a product and the surrounding temperature increases

3- energy is a reactant and the surrounding temperature increases

4- energy is a reactant and the surrounding temperature decreases

As an endothermic reaction occurs, the potential energy of the reactants

1- decreases

2- increases

3- remains the same

4- depends on the reaction