Test # 3 Physical science

Which state of matter is shown in the picture?

• Solid

• Liquid

• Gas

• Texas

Gas molecules can easily be compressed  because ___________. 

• gas molecules are soft
• gas molecules are far apart
• gas molecules follow the shape of the container

Of these three states of matter, which one has the most kinetic energy? 

• Solid 
• Liquid 
• Gas

The energy of movement is ___.

• potential energy

• kinetic energy

• mechanical energy

• electrical energy

Which of the following is a unit of pressure?

• mL

• atm

• ^oC

• moles

Gas laws involve what three variables?

• Solid Liquid Gas 
• Speed Velocity Acceleration 
• Elements Compounds Mixtures 
• Pressure Temperature Volume 

If the pressure in a balloon remains constant what happens to the balloon's volume as the temperature of the air increases?

• the volume decreases and the balloon shrivels up or shrinks

• the volume increases and the balloon expands

• the volume stays the same and the balloon stays the same size

1.70 atm, a sample of gas takes up 4.25L. If the pressure in the gas is increased to 2.40 atm, what will the new volume be?

• 0.167 L

• 6.00 L

• 3.01 L

• 0.332 L

What is buoyancy?

• The force exerted by gravity on a submerged object

• The force exerted by an object on a fluid

• Upward force exerted by a fluid on a submerged object

• The force exerted by a fluid on a floating object

When an object is fully submerged in a fluid, the buoyant force is equal to:

• weight of the object

• weight of the fluid displaced by the object

• density of the fluid

• volume of the object