2.1 Isotopes

Question 1

Proton (Position, Mass, Charge, Job)

Answer 1

In the nucleus, heavy (1amu), +1, determines the identity of an atom

Question 2

Neutron (Position, Mass, Charge, Job)

Answer 2

In the nucleus, heavy (1amu), 0, holds the nucleus together

Question 3

Electron (Position, Mass, Charge, Job)

Answer 3

Outside the nucleus, virtually zero, -1, responsible for reactivity

Question 4

Isotope

Answer 4

same element but with a different mass

Question 5

7 protons, 7 neutrons, 10 electrons

Answer 5

Nitrogen atom, -3 charge, 14amu

Question 6

Carbon, 12 amu, -4 charge

Answer 6

6 protons, 6 neutrons, 10 electrons

Question 7

Why are isotopes useful in scientific research?

Answer 7

Some are radioactive and you can use it to test if something absorbed something radioactive. They also can be used to determine the age of a fossil.