SC.912.L.18

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called

• Covalent bonds

• Ionic bonds

• Polar bonds

• Hydrogen bonds

What two elements make up water?

• Helium and oxygen

• Hydrogen and oxygen

• helium and carbon

• oxygen and carbon

Tags

NGSS.MS-PS1-1

molecule in which opposite ends have opposite electric charges

• cohesion

• polar molecule

• hydrogen bond

• solution

Why does ice float?

• As water freezes, it expands and its density decreases.

• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.

• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.

• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Conduct experiment

Ask a question

Communicate results

Form a hypothesis

Analyze results

Tags

NGSS.HS-LS1-3

NGSS.HS-PS1-3

NGSS.HS-PS3-4

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• floats when frozen

• Dissolves most substances

Refer to the picture of water sticking to a leaf; this is occurring because of:

• Adhesion

• Cohesion

Tags

NGSS.MS-ESS2-4

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

• adhesion

• capillary action

• surface tension

• polarity

What two elements make up water?

• Helium and oxygen

• Hydrogen and oxygen

• helium and carbon

• oxygen and carbon

Tags

NGSS.MS-PS1-1