Structure of an Atom Read It

What is the basic building block of all matter?

• Molecules

• Atoms

• Elements

• Compounds

What is the charge of a neutron?

• Neutral

• Positive

• Variable

• Negative

What is the term for a specific type of atom characterized by the number of protons and neutrons?

• Element

• Molecule

• Nuclide

• Isotope

What happens during alpha decay?

• The atom ejects two protons and two neutrons

• The atom emits a gamma ray

• The atomic number increases by one

• A neutron turns into a proton

What is the unit used to measure the disintegration rate of a radioisotope?

• Gram

• Becquerel

• Joule

• Meter

An element with the same number of protons but a different number of neutrons is called a/an ________

What is a half-life?