Water

How does cohesion happen?

• A single water single water molecule may be involved in as many as four hydrogen bonds at the same time, water is extremly cohesive.

• A single water single water molecule may be not involved in as many as four hydrogen bonds at the same time, water is extremly cohesive.

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

• Adhesion

• Cohesion

Cohesion and adhesion have this in common:

• Hydrogen bonding
• They create non-polar molecules
• Only relate to water
• Universal solvent

Tags

NGSS.HS-ESS2-5

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.

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

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

molecule in which opposite ends have slightly opposite electric charges

• cohesion

• polar molecule

• hydrogen bond

• solution

Tags

NGSS.MS-PS2-3

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive