Chemistry of Water

What is water made of?

• Water
• Liquid
• Hydrogen and oxygen
• Blue 

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1

What does "polar" mean?

• A molecule is cold
• A molecule has ionic bonds
• A molecule has covalent bonds
• A molecule has areas of positive and negative charge

This atom in a water molecule has more of a negative charge

• Oxygen
• Hydrogen

Tags

NGSS.HS-PS1-3

Salt dissolves in water because

• The water molecules wiggle between the Na and Cl atoms
• Water gets warm and moves around too much
• The polar areas of water molecules stick to the Na and CL ions

Tags

NGSS.HS-PS1-3

When two substances are mixed, the substance that does the dissolving is the:

• solvent
• solute

Water is the universal solvent since it's:

• water
• such a small molecule 
• polar
• essential to life

Tags

NGSS.HS-ESS2-5

What is the property of water that allows it to stick to other water molecules?

• Capillary Action
• Solubility
• Adhesion
• Cohesion

Water expands as it freezes

• True
• False

Tags

NGSS.MS-PS1-4

Describe COHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.