Atomic Models and Atomic Structure

Is this a correct dot diagram for magnesium (Mg)

• Yes

• No

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NGSS.MS-PS1-1

How many electrons should Nitrogen have around its Lewis dot model?

• 1

• 3

• 4

• 5

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NGSS.MS-PS1-1

How many electrons should Chlorine have around its Lewis dot model?

• 5

• 6

• 7

• 8

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NGSS.MS-PS1-1

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

• cell

• nucleus

• atom

• electron

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NGSS.MS-PS1-1

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

• neutron

• proton

• electron

• electron cloud

Where is most of the mass in an atom located?

• in the nucleus

• in the protons

• in the neutrons

• in the electrons

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NGSS.MS-PS1-1

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons

• The atom has more neutrons than protons

• The atom has the same number of protons and neutrons

• The atom has the same number of protons and electrons

Which of the following does the nucleus contain?

• protons and electrons

• neutrons and electrons

• protons and neutrons

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NGSS.MS-PS1-1