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- 1. Categorize
Order these chronologically and based on who proposed the model.
(a) 1904 - Thomson , (b) 1911 - Rutherford , (c) 1913 - Bohr , (d) Current - Electron CloudSpherical atom containing small, negatively charged particles.
Positively charged nucleus surrounded by negative electrons.
Electrons are in fixed orbits around the nucleus.
Model represents the area outside of the nucleus where electrons could be found.
tagsHS-PS1-1 - 2. Labeling
Using the periodic table, label the correct element symbol next to the name.
answer choicesN
O
Fe
Hg
K
Na
tagsHS-PS1-1 - 3. Drag and Drop
Atoms consist of negatively charged (a) that orbit the (b) . The nucleus consists of positively charged (c) and neutral (d) . Protons and neutrons are each made from three (e) .
electrons
nucleus
protons
neutrons
quarks
tagsHS-PS1-1 - 4. Match
Match the Following
Particles with a neutral charge found in the nucleus of an atom.
Element
Positively charged particles found in the nucleus of an atom.
Atom
The dense center of an atom containing protons and neutrons.
Nucleus
The smallest unit of an element that keeps the element’s chemical properties.
Proton
A substance that cannot be broken down into simpler substances by chemical means.
Neutron
tagsHS-PS1-1 - 5. Match
Match the following letters with their correct representation in atomic structure.
Letter representing a neutron
B
Letter representing a proton
A
Letter representing an electron
C
Letter representing the nucleus
D
tagsHS-PS1-1 - 6. Multiple Choice
Quarks make up which two subatomic particles?
protons and neutrons
protons and electrons
neutrons and electrons
protons and ions
tagsHS-PS1-1 - 7. Categorize
Organize these options based on the type of model represented in the picture.
(a) Scaled-up Model , (b) Scaled-down ModelsModel of an Atom
Model of a DNA molecule
Model of a Car
Model of the Earth
Model of a Rubber Duckie
Model of the Solar System
- 8. Multiple Choice
What is the charge of a proton?
Negative
Positive
Neutral
Variable
tagsHS-PS1-1 - 9. Multiple Choice
Which subatomic particle is not found in the nucleus of an atom?
Proton
Neutron
Electron
All of the above are found in the nucleus
tagsHS-PS1-1 - 10. Multiple Choice
What does the atomic number of an element represent?
The number of protons in the nucleus
The number of neutrons in the nucleus
The total number of protons and neutrons in the nucleus
The total number of protons and electrons in an atom
tagsHS-PS1-1 - 11. Multiple Choice
How many electrons are present in this Carbon atom?
4
5
6
7
tagsHS-PS1-1 - Answer choicesTagsAnswer choicesTags