If the chemical reaction AB + CD → AD + BC releases heat, what is true of the stored bond energy of the reactants and products? A. The bond energy of the reactants is higher than the bond energy of the products. B. The bond energy of the reactants is lower than the bond energy of the products. C. The bond energy of the reactants is the same as the bond energy of the products. D. The bonds do not have energy; the atoms release heat.

the nsw _3

Explanation:

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance