How many valence electrons does the element potassium have?

• 1
• 2
• 4
• 8

Tags

NGSS.HS-PS1-1

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

• Gain one electron
• Gain three electrons

• Lose one electron
• Lose three electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

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

Tags

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

Tags

NGSS.HS-PS1-3

How many Aluminum are in Al₂O₃?

• 3
• 2
• 5

Tags

NGSS.MS-PS1-1

When a potassium atom and a chlorine atom are brought close to one another, what will go on with their electrons?

• Share Electrons
• Drop Electrons 
• Transfer Electrons
• Nothing

Tags

NGSS.HS-PS1-2

What kind of bond will form between chlorine and fluorine?

• Metallic
• Covalent
• Ionic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is an example of an element that doesn't like to bond?

• Neon
• Oxygen
• Hydrogen
• Selenium

What is the kind of bond between two non metals called?

• Ionic
• Covalent
• Lattice
• Metallic

Tags

NGSS.HS-PS1-1

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2