7in order to determine the identity of a substance, a student listed the following properties. which of the following is a chemical property? a oxidizes in air b conducts an electric current c attraction to a magnet d dissolves in water

A Oxidizes in air

Explanation:

The chemical properties are those properties that tells us what a substance does as regards to wether it reacts with other substances or not. Most chemical properits of matter signifies a change in their chemical make up.

When a matter oxidizes in air, it depicts its chemical property. It tells us how in the presence of air such a substance would interact. Not all matter oxidizes in air.

Other chemical properties are flammability, rusting of iron, precipitation, decomposition of wate by electric current.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

it means there are 3 atoms of oxygen