Atomic Model Theory

What are isotopes?

• Elements in the same column of the periodic table

• Different versions of the same element with the same number of protons and different numbers of neutrons

• Elements with the same atomic mass

• Elements that are chemically identical

What is the charge of a proton?

• Positive

• Negative

• Neutral

What is the approximate mass of a proton in Atomic Mass Units (AMU)?

• 1 AMU

• 0 AMU

• 2 AMU

• 1836 AMU

What does AMU stand for in Atomic Mass Unit (AMU)?

• Atomic Molecular Unit

• Atomic Mass Unit

• Atomic Measurement Unit

• Atomic Molecular Weight

1. Which atomic model suggests that electrons are distributed throughout the atom in a sea of positive charge, like raisins in a pudding?

• 1. Rutherford model

• 1. Plum pudding model

• 1. Dalton's Postulates

• Quantum Model

Which ancient Greek philosopher first proposed the concept of indivisible particles called "atoms"?

• Albert Einstein

• Democritus

• John Dalton

• Antoine Lavoisier

What is the total number of protons and neutrons in an atom of carbon-12 (C-12)?

• 6 amu

• 12 amu

• 18 amu

• 24 amu

What is the AMU of the isotope carbon-14 (C-14)?

• 8 amu

• 28 amu

• 12 amu

• 14 amu

In the periodic table, elements are arranged in order of increasing what?

• Atomic mass

• Atomic number

• Electron configuration

• Neutron count

What is the sum of the number of protons and neutrons in the nucleus of an atom called?

• Atomic mass

• Atomic number

• Atomic radius

• Atomic weight