Density, Capillary Action, & Surface Tension

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

• Adhesion

• Cohesion

Describe COHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

Tags

NGSS.MS-PS1-1

tendency of molecules of the same kind to stick to one another

• cohesion
• adhesion
• solution
• polar molecule

Since water can dissolve many different materials, it is called a __________.

• Universal liquid

• Universal solvent

• Universal Dissolvent

• Universal Chemical

Water is a polar molecule because:

• Water is frozen at the North and South Poles.

• Oxygen has a negative charge and hydrogen has a positive charge.

• Water exists in all three states of matter naturally on Earth.

• All living things need water

Tags

NGSS.MS-PS1-1

A water bug “walking” on water is an example of:

• Solvent and solute

• water cycle and precipitation

• Adhesion and polarity

• surface tension and cohesion

Surface tension is the property of water in which...

• water molecules at the surface tend to stick together.

• water spills easily.

• water tends to be see-through.

The diagram has shown the WATER molecules. What is B

• Hydrogen

• Oxygen

• Carbon dioxide

• Helium

Tags

NGSS.MS-PS1-1

Refer to the picture; this is occurring because of:

• Cohesion

• Adhesion

• Capillary action

• Surface tension

Tags

NGSS.MS-ESS2-4