NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

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NGSS.MS-PS1-1

This picture represents which of the following?

• element
• compound
• mixture

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NGSS.MS-PS1-1

The coefficient in  3H₂O is

• 6
• 2
• 3
• 5

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NGSS.MS-PS1-1

How many nitrogen atoms does NH₃ have?

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

(8.5A) An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?

• +25
• +30
• -25
• -30

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NGSS.MS-PS1-1

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

• 14
• 7
• 15
• 18

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NGSS.MS-PS1-1

What are the 3 subatomic particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

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NGSS.MS-PS1-1

What is atomic mass?

• # of electrons only

• # of protons & neutrons

• # of electrons & protons

• # of protons only

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NGSS.MS-PS1-1

S8P1a A diagram of a particle is shown above. The particle is most likely _________.

• an atom

• a molecule

• a homogeneous mixture

• a heterogeneous mixture

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NGSS.MS-PS1-1

What is the atomic number?

• 35

• 18

• 17

• 52

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NGSS.MS-PS1-1