Question

Which of the following is the best definition of an element?
A. chemical substance whose atoms all have the same number of protons
B. chemical substance that has lost or gained electrons
C. chemical substance made up of different types of atoms
Which of the following is the best definition of an element?
A. chemical substance whose atoms all have the same number of protons
B. chemical substance that has lost or gained electrons
C. chemical substance made up of different types of atoms
@Physics

Answer 1

A.

Answer 2

A. This is because an element is made up of the same type of atoms. So all those atoms have similar proton number.

Answer 3

The composition of an atom is dependent on the number of protons it contains. So if all atoms have the same number of protons, then they are all the same element.

Answer 4

A is right

Answer 5

A

Answer 6

A