Unit 1 Atomic Structure Review

What are valence electrons?

• electrons on the first orbital always
• nucleus
• the outermost shell
• the number of electrons on the outermost orbital

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The particles of the atom you can find by knowing the atomic number.

• neutrons
• protons and electrons
• protons and neutrons
• atomic mass

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NGSS.MS-PS1-1

The subatomic particle that determines the identity of an element.

• neutron
• proton
• electron
• outer shell

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

An atom of an element contains 20 protons. What is the identity of the element? (NOTE: you will need to use your Periodic Table)

• Neon
• Calcium
• Potassium
• Argon

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NGSS.MS-PS1-1

Which is an example of a nonmetal?

• Platinum
• Carbon
• Silver
• Lead

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NGSS.HS-PS1-1

Which is an example of a metalloid?

• Boron
• Lead
• Radon
• Gold

How many proton are in this element?

• 238
• 92
• 146

Tags

NGSS.MS-PS1-1

• energy levels
• valence electrons
• protons
• neutrons

Tags

NGSS.HS-PS1-1

• Same group
• Same period