How many valence electrons does the element potassium have?

• 1
• 2
• 4
• 8

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NGSS.HS-PS1-1

To achieve chemical stability, what will a potassium atom do?

• Gain one electron
• Gain two electrons
• Lose one electron
• Lose two electrons

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NGSS.HS-PS1-1

Which of the following is true of ionic bonds?

• Electrons are completely transferred during bonding
• Electrons are shared during bonding
• Electrons are not involved with bonding
• All of the above

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NGSS.HS-PS1-3

How many Aluminum are in Al₂O₃?

• 3
• 2
• 5

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NGSS.MS-PS1-1

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element, when combined with Bromine, would most likely form an ionic compound?

• carbon
• lithium
• phosphorus
• aluminum

What is the name given to the electrons in the highest occupied energy level of an atom?

• cations
• anions
• orbital electrons
• valence electrons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the follow occurs in an ionic bond?

• Like-charged ions attract
• 2 atoms share electrons
• 2 atoms share 2 electrons
• Oppositely charged ions attract

A covalent bond is formed between

• nonmetal and nonmetal
• metal and metal
• cation and anion
• metal and nonmetal

Elements on the LEFT side of the periodic table will most likely form:

• Positive ions
• Negative ions
• Neutral Ions
• None of these

Tags

NGSS.HS-PS1-1