Parts of an Atom

Which two particles are in the nucleus?

• Proton

• Isotope

• Electron

• Neutron

Two isotopes of the same element have the same number of ...

• Protons

• Neutrons

• Electrons

• Atoms

Two isotopes of the same element have a different number of ...

• Electrons

• Protons

• Neutrons

• Ions

Which particle is NOT found in the nucleus.

• Electron

• Proton

• Neutron

The atomic number is the number of....

• Protons

• Neutrons

• Protons and neutrons

• Atoms

The mass number is the number of...

• Electrons and protons

• Protons, electrons and neutrons

• Atoms

• Neutrons and protons

Which of these is not a safe way to handle a radioactive source?

• Use nitrile gloves and tongs

• Wear protective clothing

• Point the source directly at another person

• Keep the source in a lead lined box

What metal stops almost all radiation?

• Lead

• Tin

• Iron

• Steel

Which part of the atom does nuclear radiation come from?

• The nucleus

• The electron shells

How many protons in an atom of Helium?

• 2

• 3

• 4

• 1