water

A solution with a pH of 3.6 would be...

• Acid
• basic
• Neutral
• Acid and basic

What is a hydrogen bond?

• attraction between molecules of the same substance
• substance that is dissolved in a solution
• weak attraction between a hydrogen atom and another atom
• way plants transport water through their tissues

Why is a water molecule polar?

• Because there is an uneven distributions of electrons between the oxygen and hydrogen atoms

• Because water is neutral

• Because water is one of the few compounds found in a liquid state.

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called

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

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form

• less polar
• more polar
• less dense
• more dense

What property of water causes these Alka-Seltzer tablets to dissolve?

• Universal Solvent

• Expansion Upon Freezing

• Cohesive Behavior

• High Specific Heat