LTA 7 and 8 Review

The oxygen end of a water molecule has a

• partially positive charge

• partially negative charge

• full positive charge

• full negative charge

The hydrogen ends of a water molecule have a

• partially positive charge

• partially negative charge

• full positive charge

• full negative charge

The name for a molecule that has one partially positive end and one partially negative end

• cohesion

• adhesion

• denature

• polar

The property of water molecules tending to stick to other water molecules

• cohesion

• adhesion

• denature

• polar

The property of water molecules tending to stick to other types of molecules besides water

• cohesion

• adhesion

• denature

• polar

What happens to proteins if they are in an environment outside of their normal pH range?

• they buffer

• they perform capillary action

• they denature

• they polarize

This is the reason that water molecules are able to "climb" from the roots to the very top of a very tall tree

• surface tension

• covalent bonding

• capillary action

• buffers

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Which statement about water isn't true?

• Water heats up quickly

• Water has an incredibly high boiling point

• Water forms more hydrogen bonds than any other liquid

• Water is less dense as a solid than as a liquid

Something with more Hydrogen ions than Hydroxide ions

• acidic

• basic

• neutral