Question

matching
match each item with the correct statement below. (answers can be used more than once)
a. proton c. neutron
b. electron d. none of the above

1. responsible for the chemical properties of the isotope
2. is used to induce fission
3. defines the atoms place on the periodic table
4. has a mass of 1 amu and acts as a nuclear \glue\
5. causes an atom to be unstable when there are more than 82 of them

Explanation:

• 26: Electrons are responsible for chemical properties. Isotopes have the same number of electrons (same atomic number).
• 27: Neutrons are used to induce fission. For example, in nuclear reactors, neutrons bombard uranium - 235 nuclei.
• 28: Protons (atomic number) define the atom's place on the periodic table.
• 29: Neutrons have a mass of approximately 1 amu and act as nuclear “glue” (hold the nucleus together).
• 30: Protons (when there are more than 82) cause an atom to be unstable. Heavy - element nuclei with a large number of protons are often unstable.

Answer:

1. b. electron
2. c. neutron
3. a. proton
4. c. neutron
5. a. proton