Unit 1 Review

subatomic particles found on the outermost shell & responsible for the atom's reactivity

• neutrons
• valence electrons
• isotopes
• ions

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NGSS.HS-PS1-1

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Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

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NGSS.HS-PS1-8

Arrangement of elements organized by atomic number

• Electron Cloud 
• Periodic Table 
• Electron Configuration
• None of these

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NGSS.HS-PS1-1

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Calculation used to find the number of neutrons in an atom

• Atomic Mass - Atomic Number
• Atomic Number - Atomic Mass
• Atomic Mass - Electrons
• none of these

Tags

NGSS.MS-PS1-1

Which group has the greatest number of valence electrons?

• 1
• 14
• 18
• 16

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

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NGSS.HS-PS1-1

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All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

• 1

• 2

• 8

• 18

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NGSS.HS-PS1-1

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What groups are the most reactive metals?

• 2 and 3

• 1 and 18

• 1 and 2

• 16 and 17

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NGSS.HS-PS1-1

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What groups are the most reactive non metals?

• 1 and 2

• 16 and 17

• 2 and 17

• 1 and 16

Describe this element.

• Highly reactive metal
• Highly reactive nonmetal
• Stable
• Less stable non metal

Tags

NGSS.MS-PS1-1