Water

What is the correct chemical formula for water?

• H₂O

• HO₂

• H₂O₂

• ₂H₁O

Tags

NGSS.MS-PS1-1

Water is polar. What does that mean?

• it is a molecule with opposite charges on opposite ends

• it is a molecule with no charge

• it is a molecule with identical charges on opposite ends

• it is a molecule with too many protons

What two elements make up water?

• Helium and Oxygen

• Hydrogen and Oxygen

• Helium and Carbon

• Oxygen and Carbon

Tags

NGSS.MS-PS1-1

Water is a universal solvent because it...

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

Which of the following is the correct molecular structure for water, H₂O?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in a water molecule?

(HINT: H₂0)

• 5

• 1

• 2

• 0

Tags

NGSS.MS-PS1-1

When a molecule has an opposite electrical charge on each end, it is known as what?

• cohesion
• polar molecule
• hydrogen bond
• solution

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

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