States of Matter & Phase Changes Mr. Pecora

During a hot shower, water vapor fogs up the cooler mirror when it turns to water.  This is an example of 

• Condensation
• Deposition
• Sublimation

Lightning flashes contain which of the following types of matter?

• Plasmas
• Liquids 
• Gases

Which unit is used for density?

• Grams per cubic centimeters
• Liters
• Cubic centimeters

Dry ice is a solid that changes directly to a gas when thermal energy is added.  This is an example of 

• Sublimation
• Condensation
• Deposition

The surface particles of a sample of matter experience a strong downward pull and stretch light enough for a spider to walk on it.  This is an example of 

• Surface tension
• The liquid state of matter
• The solid state of matter

Snow melts aftera snowstorm because of the addition of 

• Thermal energy
• Kinetic energy
• Potential energy

Attractive forces between particles in a sample of matter are strong and pull the particles close together, keeping them in their positions.  This is an example of

• The solid state of matter
• The liquid state of matter
• Surface tension

A change in the state of matter is caused if enough ____ is added to or removed from an object

• Thermal energy
• Kinetic energy
• Potential energy

At which temperature are the particles in a pencil moving the fastest

• 50⁰ C
• 40⁰  C
• 30⁰ C

Adding thermal energy to a cup of water can cause the 

• Particles to move faster or get farther apart or both
• Particles to move faster
• Particles to get farther apart