unit assessment 1 G12

What type of bond is formed when two atoms share a pair of electrons?

• covalent

• ionic

• metallic

• compound

When your glasses get foggy is an example of?

• Freezing

• Melting

• Condensation

• Evaporation

Steam is an example of?

• Condensation

• Melting

• Freezing

• Evaporation

A description of objects that can be measured and observed.

• gas
• mustangs
• physical properties
• melting point

What term describes a solid changing to a gas?

• Deposition
• Sublimation
• Evaporation
• Freezing

Which state of matter has particles arranged like this?

• solid
• liquid
• gas

Where is there a low concentration of dye?

• at the bottom of cup
• in the color
• at the top of cup 
• no concenteraion gradient

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still touch.

Liquids have the ability to flow because

• There are strong forces of attraction between the particles

• Their particles are arranged in a regular pattern

• Their particles can slide over each other

• Their particles are very far apart

Which one of the following is not a property of a solid?

• Definite color

• Definite mass

• Definite volume

• Definite shape