Unit 5 Bonding and Water Properties

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.

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NGSS.HS-PS1-2

NGSS.HS-PS1-1

Why do elements bond?

• To be friends
• To create a new element
• To become stable

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NGSS.HS-PS1-2

Why do the noble gases not react with other elements?

• They don't want to
• They need many electrons
• They have 8 valence electrons
• Their protons and electrons are balanced

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NGSS.HS-PS1-2

NGSS.HS-PS1-1

Which answer best describes Lewis Dot Diagrams

• A model that shows the number of valance electrons an element has and how valance electrons are involved in bonding.

• A detailed model of the atom showing the location of protons, neutrons and electrons and how they interact.

• A model showing the interactions of different species (biotic factors) and nonliving environmental components (abiotic factors) to form a thriving ecosystem.

• A model showing the differences between elements, compounds, and mixtures at the atomic level.

The octet rules states that the atom is most stable when its valence electrons number is equal to

• 32
• 18
• 12
• 8

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NGSS.HS-PS1-2

NGSS.HS-PS1-1

Metals

• Gain electrons and form negative anions

• Lose electrons and form negative anions

• Gain electrons and form positive cations

• Lose electrons and form positive cations

Nonmetals

• Gain electrons and form negative anions

• Lose electrons and form negative anions

• Gain electrons and form positive cations

• Lose electrons and form positive cations

The force of attraction that holds two atoms together as a result of the rearrangement of electrons between them whether transferred or shared is called a

• Ionic Bond

• Covalent Bond

• Chemical Bond

• James Bond

Ionic and Covalent bonds are both types of chemical bonds, but they are also both types of _____________ bonds, or bonds that occur within a molecule.

• Intermolecular

• Intramolecular

• Matrimonial

A bond that is formed when a electron is transferred to form ions

• Ionic Bond
• Covalent Bond
• Metallic Bond
• Barry Bonds