EVERYDAY SCIENCE

Detailed explanation-1: -The properties of an element do change when that element combines with other elements to form compounds. There are only 118 known elements which combine to make everything in the universe. If you think about that, you’ll see that the properties of the element must change depending upon the compound it is in.

Detailed explanation-2: -Atoms of elements bond with each other through chemical reactions to form compounds. They bond in order to fill their outer shell of electrons and become stable. Many atoms need a total of eight electrons in their outer shell to become full.

Detailed explanation-3: -False, A compound’s properties are different from that of its constituent elements. For example, water is made up of oxygen, a gas and hydrogen which is also a gas, whereas water, a compound formed by oxygen and hydrogen, is a liquid. Was this answer helpful?

Detailed explanation-4: -When elements combine to form compounds, their properties only change slightly. The properties of a compound are an average of the properties of the individual elements. Life could not exist with just 91 elements if they did not combine to form compounds.

Detailed explanation-5: -When elements combine to form compounds:-their properties do not change.