Structure of Atoms

Multiple Choice

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

Multiple Choice

The region inside an atom where electrons are likely to be found

• Proton

• Atom

• Electron Cloud

• Neutron

Multiple Choice

Where is the proton located?

• In the very dense nucleus
• Floating around in the negative electron cloud
• the loose nucleus
• the positive electron cloud

Multiple Choice

Which description about the proton is accurate?

• Positively charged particle with a mass less than 0 amu
• A neutrally charged particle with a mass less than 0 amu
• Positively charged particle with a mass of 1 amu
• A neutrally charge particle with a mass of 1 amu

Multiple Choice

What two subatomic particles have approximately the same mass?

• electrons & neutrons

• protons & electrons

• neutrons & protons

Multiple Choice

The neutrally charged particle (no charge) inside the nucleus is called a(n)

• proton

• neutron

• electron

• nucleus

Multiple Choice

What is the charge of the electron

• positive
• no charge
• negative
• neutral

Multiple Choice

Which of the following best describes an electron?

• It has no charge and about the same mass as a proton
• It has a negative charge and much less mass than a proton
• It has a positive charge and much more mass than a neutron
• It has a negative charge and about the same mass as a neutron

​Practice Problems:

Draw

Practice Problem #1

Fill in the missing information

Draw

Practice Problem #2

Fill in the missing information

Draw

Bohr Model of Carbon:

Fill in the missing information

Draw

Example #1

Identify the element using the Bohr model.

Draw

Example #2: Identify the atom/element using the Bohr model

Multiple Choice

The smallest unit of an element that maintains the properties of that element

• Proton

• Atom

• Nucleus

• Electrons

Multiple Choice

A particle smaller than an atom

• Subatomic Particle

• Atom

• Electrons

• Elements

Multiple Choice

Anything that has mass and takes up space

• Protons

• Gas

• Atoms

• Matter

Multiple Choice

A subatomic particle that has a positive charge and that is located in the nucleus of an atom.

• Subatomic Particle

• Neutron

• Proton

• Electron

Multiple Choice

A subatomic particle that has neutral (neither positive nor negative) charge and is located in the nucleus

• Electron

• Neutron

• Protron

• Atom

Multiple Choice

A subatomic particle that has negative charge and is located outside of the nucleus

• Protrons

• Electrons

• Neutrons

• Subatomic Particle

Multiple Choice

Space outside of nucleus where electrons are likely to be found

• Matter

• Electron area

• Subatomic Particle

• Electron Cloud

Multiple Choice

The number of protons in the nucleus of an atom

• Atomic Number

• Atomic Mass

• Atomic Symbol

Drag and Drop

What is the lightest subatomic particle?​ ​

Placeholder

Drag these tiles and drop them in the correct blank above

electron

proton

neutron

Multiple Choice

What vocabulary word completes the missing box in the table?

• electron cloud

• nucleus

• atom

• electron