Water a polar molecule

How many Hydrogen atoms does a single water molecule have?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What does "polar" mean?

• A molecule is cold

• A molecule has areas of positive and negative charge

Tags

NGSS.MS-PS2-3

This atom in a water molecule has more negative charge

• hydrogen

• oxygen

Our body and our cells contain an average of:

• 10% of water

• 50% of water

• 70% of water

• 100% of water

The 3 states of water result of a

• chemical change

• physical change

Tags

NGSS.MS-PS1-4

Select the good defenition for PHYSICAL CHANGE:

• A CHEMICAL REACTION OCCURS & NEW PRODUCT ARE FORMED

• MATTER CHANGE FORM BUT NOT CHEMICAL IDENTITY

Select the good definition for CHEMICAL CHANGE:

• A CHEMICAL REACTION OCCURS & NEW PRODUCT ARE FORMED

• MATTER CHANGE FORM BUT NOT CHEMICAL IDENTITY

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ice float on water because the ice is less dense than liquid water.

• True

• False