Chapter 16 8th Grade Science Putman

Matter in which atoms are tightly held in place is a ____. 

• gas
• liquid
• solid
• plasma

A gas-like mixture with no definite volume or shape that is made up of positively and negatively charged particles is a ____.

• gas
• plasma
• liquid
• solid

Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a ____. 

• gas
•  plasma
• liquid
• solid

Most matter ____ when heated. 

• expands
• contracts
• condenses
• solidifies

The theoretical point at which all molecular motion stops is called ____. 

• the boiling point 
• absolute zero 
• the melting point
• the frozen point

Compared to most substances, water is unusual because it ____ when it goes from the liquid to solid state.

• diffuses
• expands
• contracts
•  melts 

The amount of energy needed to change a material from a liquid to a gas is called the heat of ____. 

•  fusion
• condensation
• evaporation
• vaporization

According to ____, if you decrease the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase. 

• Archemedes’ principle
• Boyle’s law
• Charles’s law 
• Bernoulli’s principle

According to ____, the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. 

•  Archimedes’ principle
• Boyle’s law 
• Charles’s law
• Bernoulli’s principle

According to ____, as the velocity of a fluid increases, the pressure exerted by the fluid decreases. 

• Bernoulli’s principle 
• Archimedes’ principle
• Charles’s law
• Boyle’s law