atomic mass and isotopes

What is an isotope?

• A charged atom

• Two atoms of the same element with different amounts of neutrons

• Two atoms of the same element with different amounts of protons

• A neutral atom

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NGSS.MS-PS1-1

What is the mass of an electron?

• 1 amu

• negligible

how many electrons does an uncharged atom of Neon have?

• 8

• 9

• 10

• 11

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NGSS.HS-PS1-1

How many neutrons does this isotope of lithium have?

• 3

• 4

• 8

• 5

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NGSS.MS-PS1-1

What quantities vary between isotopes of an element?

• Neutrons and mass number

• Neutrons and electrons

• Protons, electrons, and atomic number

• Protons, electrons, and atomic mass

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NGSS.HS-PS1-8

A neutral atom with atomic number 6 would have how many electrons?

• 3

• 6

• 1

• 2

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NGSS.MS-PS1-1

The positive particles of an atom are

• Protons

• Electrons

• Positrons

• Neutrons

Which two components of an atom contribute to the mass?

• Neutrons and electrons

• Protons and neutrons

• Protons and electrons

The central region of an atom, where its neutrons and protons are found, is called the

• Nucleus

• Center

• Electron cloud

• Core

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NGSS.MS-PS1-1

What is the atomic mass of sulfur?

• 33

• 32.06

• 18.998

• 32