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Bohr Model of the Atom

Explore the structure of atoms using the Bohr model, including electron shells, protons, neutrons, and electrons.

Grade 9 Science ChemistryBohr Model
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Fill in the BlanksMultiple ChoiceShort AnswerTrue / FalseMatching

Standards

HS-PS1-1

Topics

ChemistryBohr ModelAtomic StructureElectronsProtonsNeutrons
7 sections · Free to use · Printable
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Bohr Model of the Atom Worksheet

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Read each question carefully and answer to the best of your ability. Refer to the Bohr model diagram when necessary.

1. In the Bohr model, electrons orbit the nucleus in specific energy levels called  .

2. The center of an atom, containing protons and neutrons, is called the  .

3.   are negatively charged particles found in electron shells.

4. The atomic number of an element is determined by the number of   in its nucleus.

5. Which of the following is NOT a component of the nucleus in a Bohr model atom?

a

Protons

b

Neutrons

c

Electrons

d

Both a and b

6. According to the Bohr model, electrons can move from a lower energy level to a higher energy level by:

a

Emitting light

b

Absorbing energy

c

Losing mass

d

Gaining protons

7. Draw a Bohr model diagram for a Lithium atom (Li). Lithium has an atomic number of 3 and an atomic mass of 7.

Bohr Model Atom Diagram

8. The Bohr model accurately depicts the exact path of electrons around the nucleus.

T

True

F

False

9. In a neutral atom, the number of protons is equal to the number of electrons.

T

True

F

False

Match each term with its correct description.

10. Proton

 

a. Negatively charged particle

11. Electron

 

b. Positively charged particle

12. Neutron

 

c. Particle with no charge