water

Water is made up of these two colorless, odorless gases.

• Helium and Oxygen
• Oxygen and Carbon Dioxide
• Hydrogen and Helium
• Hydrogen and Oxygen

Tags

NGSS.MS-PS1-1

The molecular formula for water is

• W
• H2O
• 2HO
• H₂O

Tags

NGSS.MS-PS1-1

Water dissolves ionic compounds, like NaCl, because water molecules...

• are non polar
• have a pH value of 14
• Have partially charged ends that interact with ions
• do not contain atoms

How many hydrogen bonds can one water molecule make?

• 6
• 3
• 4
• 2

Tags

NGSS.HS-ESS2-5

Water is cohesive, the molecules are attracted to one another because of hydrogen bonds. This attraction helps create...

• surface action
• surface tension
• ice
• solvents

A water molecule is polar. Its bent shape results in the following...

• slightly positive charge on hydrogen and slightly negative charge on oxygen
• slightly positive charge on hydrogen and slightly  positive charge on oxygen
• slightly negative charge on hydrogen and slightly positive charge on oxygen
• no change because its neutral

When water travels up the stem of a plant, this is a result of

• surface tension
• capillary action and adhesion
• capillary action and cohesion
• capillary action, cohesion and adhesion

Water helps maintain homeostasis in an organism, which of the following hold true to that?

• Its high specific heat
• Its ability to dissolve substances
• Its ability to be a polar molecules and have a pH of 7
• all of these

Tags

NGSS.HS-LS1-3

What property of water is being shown?

• polarity
• freezing point
• hydrogen bonds
• solution/universal solvent

What property of water is being shown?

• cohesion
• adhesion
• polarity
• freezing point