ISOTOPES

Question 1

Are atoms of the same element having different masses.

Answer 1

ISOTOPES

Question 2

of an element have the same number of protons but different numbers of neutrons.

Answer 2

ISOTOPES

Question 3

This was coined in 1913 by Frederick Soddy (English, 1877-1956), a student of Rutherford.

Answer 3

ISOTOPES

Question 4

The mass number, or the total number of protons and neutrons, distinguishes an ——— of a particular element to its other ———.

Answer 4

ISOTOPES

Question 5

This was coined in ——— by ——— (English, 1877-1956), a student of Rutherford.

Answer 5

Frederick Soddy
1913

Question 6

This was coined in 1913 by Frederick Soddy (English, ———), a student of ———.

Answer 6

1877-1956
Rutherford

Question 7

Most elements have at least ——— isotopes.

Answer 7

two or three

Question 8

Some elements, such as ———, do not have any isotopes.

Answer 8

fluorine

Question 9

An atom of fluorine will always contain ——— protons and ——- neutrons.

Answer 9

nine
10

Question 10

If the isotopes of an element have the ——— number of electrons, then they will have the ——— chemical properties.

Answer 10

same
same

Question 11

The chemical characteristics of a given atom depend only on the ——— in the atom, not the neutron number.

Answer 11

number of electrons

Question 12

However, isotopes of an element have slightly ——— physical properties.

Answer 12

different

Question 13

The slight variation in their physical property is due to the ——— in their relative masses.

Answer 13

small difference