Science: Chapter 3 Test

What determines the speed of atoms and molecules of a particular substance?

Size of atoms and molecules and temperature of a substance

Archimedes principle states that the buoyant force on an ____ is equal I the weight if the displaced volume of the fluid

Object in the fluid

The resistance of a fluid to flow is referred to as

Viscosity

Which state of matter will hold its shape without a container?

Solid

The kinetic theory states that the higher the temp. the faster the

Particles make up a substance move

The change of a substance from a solid directly to a gas is called?

Sublimation

Evaporation refers to the change in a state from a

Solid to liquid

The law of conservation of mass states that mass cannot be

Created or destroyed

Ice floats in water because it

Less dense than water

Buoyant force is the ____ force exerted on an object immersed or floating on a liquid

Upward

The measure of the total kinetic energy of the particles of an object is called

Thermal energy

All matter is made of atoms and molecules that are

Always in motion

According to the law of conservation of mass

Total mass stays the same in changes of state

When ice melts energy is

Absorbed

The temperature at which a substance changes from a liquid to a solid is the

Freezing point

The engine of a car left running for a long period of time becomes hot because

Energy is transferred from the burning gasoline

A substance changes from a liquid to a gas during evaporation because

Energy is absorbed

What happens to the particles of a substance when it condenses?

Particles slow down and clump together

Which is not a fluid

Wood

The notion that an abject floats if the buoyant force on the object is equal to the objects weight was described by

Archimedes

Pascals principle states that a contained fluid exerts pressure

Equally in all directions

Force divided by the are over which the force is exerted is the calculation of

Pressure

Measure of the resistance to flow of a fluid is

Viscosity

As the pressure of a moving liquid increases, it's speed

Decreases

Bernoullis principle describes the property of an

Fluid in motion

Upward force exerted on an object immersed or floating on a liquid is called

Buoyant force

Which of these properties is shared by solids, liquids, and gases?

Their particles are in constant motion

State of matter that is not a fluid

Solid

Which state if matter has a definite volume, but not a definite shape?

Liquid

How does the density if an object that sinks into a fluid compare to the density of the fluid?

The object that sinks is more dense than the fluid

Unlike a gas, plasma

Conducts electric current

The particles can slide past each other but are still packed together

Liquid

The particles have broken down and become ionized

Plasma

The particles are in a rigid fixed structure

Solid

The particles are in a constant motion and rarely stick together

Gas

Why does a rubber duck float on water?

It's less dense than the water

Which state of matter has particles able to slide past each other yet still packed together

Liquid

What determines the speed of atoms and molecules of a particular substance?

Mass

How is pressure calculated?

Forced divided by the area over which the force is exerted