NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

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NGSS.MS-PS1-1

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

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NGSS.MS-PS1-1

the tiny particles that make up an atom; proton, neutron and electron.

• atom
• electron cloud
• nucleus
• subatomic particles

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NGSS.MS-PS1-1

I have 2 electrons in my 3rd energy level.  Which element could I be?

• B
• Mg
• Be
• Si

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NGSS.MS-PS1-1

When a covalent bond forms _______________ are shared.

• protons

• nutrons

• valence electrons

• quarks

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NGSS.MS-PS1-1

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

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NGSS.MS-PS1-1

How many molecules are present in 25.0 g of NaBr?

• 103 molecules

• 0.240 molecules

• 1.46x10²³ molecules

• 2.34 x 10²⁰ molecules

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NGSS.MS-PS1-1

Which is the formula containing

three hydrogen (H) atoms

one sulfur (S) atom

four oxygen (O) atoms?

• H₃SO₄

• HSO₄

• H₃S₃O₄

• H₂O

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NGSS.MS-PS1-1

This picture is a model of...

• an element

• a compound

• a homogenious mixture

• a heterogeneous mixture.

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NGSS.MS-PS1-1

What is the atomic number of this element?

• 20

• 60

• 40

• 41

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NGSS.MS-PS1-1