Question

1) When elements combine to form compounds:

A) their properties are an average of all elements in the compound.
B) their properties change completely.
C) their properties do not change.
D) their properties are completely random.
E) none of the above

Answer 1

Answer:

B

Explanation:

when elements reacts to form a compound the elements properties changes completely. This happens due to the fact that a chemical reaction has taken place. In a chemical change new substances are formed and the properties of the products differ entirely from that of the reactant.

for example if hydrogen combines with oxygen to form water, the property of hydrogen differs from oxygen and also both differs chemically when compared to water.