Unit 1.1 Atomic Structure Lesson

Atomic Structure

Atomic Structure

Electron

Multiple Choice

who discovered the electron

• Dalton

• J.J Thomson

• Lavoisier

• Rutherford

Multiple Choice

What is the charge of a proton?

• Negative

• Positive

• Neutral

Multiple Choice

What particle number is equal to the atomic number Z

• Protons

• Electrons

• Neutrons

Multiple Choice

What is the charge of a neutron?

• Negative

• Positive

• Neutral

Multiple Choice

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

Multiple Choice

If the atomic mass is not given, how do we calculate it?

• (protons) + (electrons)

• (atomic mass) - (atomic number)

• (protons) - (neutrons)

• (protons) + (neutrons)

Multiple Choice

Carbon has an atomic # of 6 and a mass of 12, how many neutrons does it have?

• 8

• 6

• 12

• 18

Multiple Choice

Rb has a mass of 85 and an atomic number of 37, how many neutrons does it have?

• 85

• 37

• 48

• 122

Multiple Choice

What is the atomic # of an atom with 51 neutrons and a mass of 91?

• 91

• 51

• 142

• 40

Multiple Choice

How many protons are in an atom of manganese?

• 50

• 54.938

• 25

• 109.876

Multiple Choice

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

Multiple Choice

The mass of this particle is so small that it is not counted toward the mass of an a atom.

• proton
• electron
• neutron
• quark

Multiple Choice

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass
• False - They do not have about the same mass

Multiple Choice

________________ have a positive charge, ___________________ have NO charge, and _____________________ have a negative charge.

• Protons, Electrons, Neutrons

• Neutrons, Electrons, Protons

• Protons, Neutrons, Electrons

• Electrons, Neutrons, Protons

Explanation Slide...

The smaller number is the atomic number and it is the number of protons in the nucleus.

Open Ended

What are the particles circulating around the Nucleus

Poll

Why is the "Atomic Mass: in the periodic Table is different than the "Mass Number" of an Atom ?

• It is the average mass of all the isotopes

• Because atoms can have different masses

• I have no Idea

• All answers are correct