P2 Nuclear

Question 0

What is an isotope?

Answer 0

Nuclei with the same number of protons but different numbers of neutrons

Question 1

Which particle has the mass of a proton but no charge

Answer 1

Neutron

Question 2

What is nuclear fusion?

Answer 2

Small nuclei (like H) joining to form larger nuclei (like He) and releasing energy

Question 3

What is nuclear fission?

Answer 3

Large nuclei (like U) absorbing a neutron and splitting into smaller nuclei and releasing energy

Question 4

What is the charge and mass of an electron?

Answer 4

Charge = -1
Mass = 1/2000 0f a proton

Question 5

What is the charge of an atom?

Answer 5

In an atome, the number of positive protons is the same as the number of negative electrons, so the atom is neutral

Question 6

If an atom gains or loses electrons what does it become?

Answer 6

An ion

Question 7

What does atomic number tell us about the nucleus?

Answer 7

Atomic number is the number of protons

Question 8

What does the mass number tell us about a nucleus?

Answer 8

Mass number is the total number of protons and neutrons

Question 9

How do we calculate the number of neutrons in a nucleus?

Answer 9

(mass number) - (atomic number)