Four properties of water are listed. 1. it reacts with halogens to form oxygen gas as one of the products. 2. it is transparent and tasteless in its pure form. 3. it freezes at a temperature of 0 °c and lower. 4. it decomposes to form hydrogen and oxygen. which are the chemical properties of water? a. 1 and 2 b. 1 and 4 c. 2 and 3 d. 3 and 4

B. 1 and 4

Explanation:

Chemical properties are those that cause the substance that reacts to undergo a chemical change. The product formed has completely different chemical property than the reactant. In a physical change the substance undergoes a physical change such as phase transition. In a physical change no new chemical substance is formed.

its mg hope this

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.