Exploring Covalent Bonds and Their Properties

What is the total number of valence electrons in a neutral oxygen atom?

• 4

• 2

• 8

• 6

Tags

NGSS.HS-PS1-1

How many electrons does each oxygen atom share with the other in the formation of an O2 molecule?

• 1

• 6

• 2

• 4

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NGSS.HS-PS1-2

What type of bond is formed when two oxygen atoms share electrons?

• Metallic bond

• Covalent bond

• Ionic bond

• Hydrogen bond

Tags

NGSS.HS-PS1-1

How many valence electrons does hydrogen have?

• 1

• 8

• 6

• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a water molecule, how many valence electrons does oxygen 'pretend' to have?

• 2

• 4

• 6

• 8

Tags

NGSS.HS-PS1-1

Why does oxygen have a partial negative charge in a water molecule?

• It attracts the shared electrons more than hydrogen.

• It has fewer protons than hydrogen.

• It is less electronegative than hydrogen.

• It shares electrons equally with hydrogen.

What is the result of oxygen being more electronegative than hydrogen in a water molecule?

• Hydrogen has a partial negative charge.

• Oxygen has a partial negative charge.

• Oxygen donates electrons to hydrogen.

• The bond becomes ionic.

What symbol is used to indicate a partial charge in chemistry?

• Alpha (α)

• Gamma (γ)

• Beta (β)

• Delta (δ)

What type of covalent bond is formed between oxygen and hydrogen in water?

• Nonpolar covalent bond

• Ionic bond

• Polar covalent bond

• Metallic bond

How does the electronegativity difference between oxygen and hydrogen affect their covalent bond?

• It has no effect on the bond.

• It makes the bond nonpolar.

• It makes the bond polar.

• It makes the bond ionic.

Tags

NGSS.HS-PS1-1