NGSS.MS-PS1-1

SILICON

• S
• Si
• Su
• Sc

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NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

How many atoms are in CuSO₄?

• 3
• 4
• 5
• 6

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NGSS.MS-PS1-1

How many phosphorous atoms are in the formula for Sr₃(PO₄)₂?

• 2
• 3
• 4
• 8

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NGSS.MS-PS1-1

The maximum number of electrons in the third energy level of an atom is

• two
• four
• eight
• ten

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NGSS.MS-PS1-1

What is the purpose of a subscript in a chemical formula?

• It tells the number of atoms of an element.

• Tells how many molecules there are in the formula.

• It tells how strong the reactivity will be.

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NGSS.MS-PS1-1

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

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NGSS.MS-PS1-1

The chemical formula: O₂ would represent what type of substance?

• Element

• Compound

• Mixture

• Molecule

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NGSS.MS-PS1-1

What charge will this atom have when it satisfies the octet rule?

• -3

• +3

• -5

• +5

• 0

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NGSS.MS-PS1-1

What does b represent?

• Proton

• Neutron

• Electron

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NGSS.MS-PS1-1