Biology II Chapter 2 2nd Half TEST

The two strongest types of bonds are ________ bonds and ________ bonds.

• Ionic

• Covalent

• Hydrogen

• Metallic

What is the sharing of a pair of valence electrons by two atoms?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Tags

NGSS.HS-PS1-1

What do you call two or more atoms held together by covalent bonds?

• Molecule

• Ion

• Compound

• Element

What is the molecular formula for a compound of hydrogen gas?

• 
• H₂

• 
• 

Choose the structural formula for oxygen that represents the double bond between the oxygen atoms.

• 
• O=O

• O-O

• 

Choose the space filling structure for water.

• 
• O=O

• O-O

• 

Tags

NGSS.MS-PS1-1

The attraction of a particular atom for the electrons of a covalent bond is called ________.

• Electronegativity

• Ionization energy

• Electron affinity

• Atomic radius

In a covalent bond between two atoms of the same element, the electrons are shared equally, and is called a ________ covalent bond.

• Polar

• Nonpolar

• Ionic

• Metallic

Ions of opposite charges form what type of bond?

• Covalent

• Ionic

• Metallic

• Hydrogen

Tags

NGSS.HS-PS1-3

What type of bond holds together sodium and chlorine?

• Covalent

• Ionic

• Metallic

• Hydrogen

Tags

NGSS.HS-PS1-3