Tuesday's Warm-Up (6.6a, 6.6b, 6.6c)

Water is a universal solvent because it...

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

A water molecule has the chemical formula H2O. This means that the water molecule is made up of

• Two hydrogen atoms and one oxygen atom

• Two oxygen atoms and one hydrogen atom

• Two hydrogen atoms and two oxygen atoms

• Two molecules of water

Tags

NGSS.MS-PS1-1

The tightness across the surface of water that enables paper clips to float is ____________.

• adhesion
• capillary action
• surface tension
• polarity

Cohesive means ........

• the water molecules stick to each other

• the water molecules stick to other surfaces

• the water molecules are less dense

• the water molecules are far apart

Adhesive means ........

• the water molecules stick to each other

• the water molecules stick to other surfaces

• the water molecules are less dense

• the water molecules are far apart

Water can bounce on water because of surface tension.

• True

• False

Why is water so good at dissolving so many substances?

• it is polar

• it is less dense as a solid

• cohesion

• adhesion

Which property of water were you learning about at the "Magical Moving Pepper" station?

• surface tension
• universal solvent
• adhesion
• capillary action

Snow, sleet, hail, and rain are all examples of  ________________. 

• evaporation
• condensation
• accumulation
• precipitation

Tags

NGSS.MS-ESS2-4

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive
• The hydrogen end is slightly negative and the oxygen end is slightly positive
• The hydrogen and oxygen ends change in polarity
• Because it is hydrophobic