Meredith Benchmark

The abilities to dissolve in water and to conduct electricity are examples of

• natural properties
• chemical properties
• natural laws of matter
• physical properties

Which is the correct equation for calculating density?

• Density=Mass/Volume
• Density=Mass/Weight
• Density=Volume/Mass
• Density=Volume/Weight

What is the density of an object whose mass is 180 grams and whose volume is 45 cm3?

• 4 cm3/g
• 0.25 g/cm3
• 4 g/cm3
• 0.25 cm3/g

Kinetic energy is the energy of

• motion
• potential
• gravity
• distance

Which of the following is the best example of increasing an object's potential energy?

• rolling a bowling ball
• turning on a light bulb
• stretching a rubber band
• dropping a pencil

An object is in motion if

• its position changes relative to its surroundings
• energy is applied to the object
• a force is applied
• it loses energy

Which of the following is not a form of energy?

• light
• sound
• air
• electricity

At what point on the track does the car have the greatest potential energy and the greatest kinetic energy?

• greatest potential energy: at the ending point; greatest kinetic energy: at the starting point
• greatest potential energy: at the starting point; greatest kinetic energy: at the ending point
• greatest potential energy: at the highest point on the track; greatest kinetic energy: at the lowest point on the track
• greatest potential energy: at the lowest point on the track; greatest kinetic energy: at the highest point of the track

In a heterogeneous mixture the substances

• can be physically separated
• are chemically combined
• can only be separated through chemical processes
• break down into new substances

In the chemical equation shown, what are the reactants?

• CH4 and 2O2
• 2O2
• CO2 and 2H2O
• CH4