Isotope Review

Subatomic and Isotopes Review

John Dalton

• Billiard Ball Model

• All matter is made of atoms

• Atoms of an element are exactly the same

• Atoms are indestructible & uncuttable

JJ Thomson

• Plum Pudding Model / Chocolate Chip Cookie Model

• Atom is made of smaller particles

• Discovered the electron

• Electrons are scattered throughout

Ernest Rutherford

• Nuclear Model

• Gold Foil experiment

• Nucleus is a small, dense, positively charged center

• Atom is mostly open space

• Electrons scattered outside the nucleus

Niels Bohr

• Planetary Model

• Mass of atom is mostly in the nucleus

• Electrons move in orbits around the nucleus

Erwin Schrodinger

• Electron Cloud Model

• Electrons DO NOT orbit the nucleus

• Electrons whirl around nucleus at high speeds

Multiple Select

Match the Model with the Scientist

Electron Cloud

• Dalton

• Thomson

• Rutherford

• Bohr

• Schrodinger

Multiple Select

Match the Model with the Scientist

Billiard Ball

• Dalton

• Thomson

• Rutherford

• Bohr

• Schrodinger

Multiple Select

Match the Model with the Scientist

Plum Pudding / Chocolate Chip Cookie

• Dalton

• Thomson

• Rutherford

• Bohr

• Schrodinger

Multiple Select

Match the Model with the Scientist

Planetary

• Dalton

• Thomson

• Rutherford

• Bohr

• Schrodinger

Multiple Select

Match the Model with the Scientist

Nuclear

• Dalton

• Thomson

• Rutherford

• Bohr

• Schrodinger

Subatomic Particles

• Protons, positive particles in the nucleus

• Neutrons, neutral particles in the nucleus

• Electrons, negative particles in the outer shells

Multiple Choice

Which of the following is NOT a subatomic particle?

• Proton

• Neutron

• Photon

• Electron

Multiple Choice

Which subatomic particle has a positive charge?

• Proton

• Neutron

• Electron

Multiple Choice

Which subatomic particle is neutral?

• Proton

• Neutron

• Electron

Multiple Choice

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

Multiple Choice

Which subatomic particles are NOT located in the nucleus?

• Protons

• Neutrons

• Electrons

Atomic Number

• Unique number

• Identifies the number of protons or electrons in the atom

Multiple Choice

The atomic number of an element is the same as the number of ________ in the nucleus.

• Protons

• Neutrons

• Protons + Neutrons

• Electrons

Atomic Mass

• The total number of protons and neutrons in an atom

• measured in atomic mass units (amu)

Multiple Choice

The mass number of an isotope is equal to the number of ______ in an atom.

• Protons

• Neutrons

• Protons + Neutrons

• Electrons

Neutrons

• Can by found by subtracting the atomic number from the atomic mass

Identify the missing information

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Identify the missing information

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Identify the missing information

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Isotopes

• Atoms of the same element

• Same atomic number

• Different atomic masses

• Different number of neutrons

Multiple Choice

Which Isotope has 5 neutrons?

• Li-8

• Li-7

• Li-6

Multiple Choice

What is the name of the isotope?

• Boron-5

• Boron-6

• Boron-11

Calculating Average Atomic Mass

• Step 1) Multiply the mass and the abundance for each isotope.

• Step 2) Add them together to find the total Mass Abundance.

• Step 3) Divide the total by 100.

Multiple Choice

What is the average mass of lithium?

• 4.08

• 1.1

• 408

• 110