AP Biology Summer Work: Water and pH Quiz

molecule in which opposite ends have opposite electric charges

• cohesion
• polar molecule
• hydrogen bond
• solution

Tags

NGSS.HS-PS1-3

Which term refers to water having partial positive and a partial negative charge?

• cohesion
• surface tension
• polarity
• adhesion

When water molecules stick to other materials it is called _____________.

• adhesion

• cohesion

• capillary action

• surface tension

The charge of oxygen in a water molecule is ______________.

• negative
• neutral
• positive
• balanced

Tags

NGSS.MS-PS1-1

A hydrogen atom in a water molecule will be attracted to the _____________ atom of another water molecule. 

• oxygen
• hydrogen
• nitrogen
• positive 

Tags

NGSS.MS-PS1-1

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules
• Strong hydrogen bonds between water molecules
• Dispersion forces which are present in all molecules
• Asymmetrical shape of the polar bonds.

When atoms share electrons unequally...

• a nonpolar covalent bond is formed.
• an ionic bond is formed.
• a polar covalent bond is formed.
• a hydrogen bond is formed.

The property of water that allows water molecules to stick to another substance is

• adhesion
• cohesion
• density
• specific heat

Tags

NGSS.HS-ESS2-5

What are the valence electrons?

• electrons in the outer shell
• all electrons in the atom
• electrons the atom needs
• positive electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Many substances—for example, salt (NaCl) and sucrose—dissolve quickly in water.  This is because water is

• adhesive
• hydrophobic
• nonpolar
• polar

Tags

NGSS.HS-ESS2-5