Practice: Isotope Calculations #1

Different versions of the same element, like pictured above, are known as _________?

• isotopes

• ions

• molecules

• allotropes

The numbers 12, 13, and 14 refer to the _________.

• mass

• volume

• temperature

• pressure

What subatomic particle makes each of these isotopes different?

• Neutrons

• Protons

• Electrons

• Quarks

How many does each have of #3?

• 6, 7, 8

• 5, 6, 7

• 7, 8, 9

• 4, 5, 6

What subatomic particle makes each of these isotopes the same?

• Protons/Electrons

• Neutrons

• Quarks

• Gluons

How many does each have of #5?

• 6

• 4

• 8

• 10

This form of notation is known as __________.

• nuclear form

• chemical equation

• Lewis structure

• empirical formula

The other form of isotope notation is known as __________.

• hyphen

• dot

• slash

• colon

For each isotope, write it in the form listed in #8.

• C-12, C-13, C-14

• C-10, C-11, C-12

• C-14, C-15, C-16

• C-11, C-12, C-13

What is the atomic number, mass, number of protons, neutrons, and electrons for Uranium-235?

• Atomic #: 92, Mass #: 235, # of p+: 92, # of n0: 143, # of e-: 92

• Atomic #: 92, Mass #: 238, # of p+: 92, # of n0: 146, # of e-: 92

• Atomic #: 235, Mass #: 92, # of p+: 143, # of n0: 92, # of e-: 143

• Atomic #: 143, Mass #: 235, # of p+: 143, # of n0: 92, # of e-: 143