Chapter 3 Review

Boyle’s Law states that at a _______________ temperature, the _______________ will increase when the ________________ decreases.

Constant Volume Pressure

What is the reverse of Condensation?

Evaporation

What happens to the particles in a liquid when it becomes a gas What happens to the particles in a liquid when it becomes a gas? A) The particles give off energy B) The particles break away from each other C) The particles move closer together D) The particles slow down

Answer: the particles break away from each other

Charles’s Law states that when the temperature of a gas _______________, the volume ______________.

Increases

The melting point of certain substances is equal to it’s _______________ point.

Freezing

A change in which energy is gained by the substance as it changes state

endothermic

Change of state from a solid to a liquid Change of state from a liquid to a gas- occurs at the surface Change of state from a liquid to a gas throughout the liquid Change of state from a gas to a liquid Change of state from a solid directly to a gas Change of state from a liquid to a solid

Melting Evaporation Boiling Condensation Sublimation Freezing

A change in which energy is removed from a substance as it changes state

Exothermic

Liquids that flow slowly have a _____________ _______________ Liquids that flow quickly have a ______________ _____________

high Viscosity low Viscosity

This type of solid has a distinct melting point and occur in regular repeating patterns This type of solid has no distinct melting point, they gradually melt and have no regular repeating patterns

Crystalline solids Amorphous solids

When discussing the “Behavior of Gases”, what 3 measurements are used?

Temperature Pressure Volume

What temperature does water boil at sea level? If you are at a higher altitude, is the boiling point higher or lower than at sea level?

100 degrees Celcius Water boils at a lower temperature when you are at a higher altitude (elevation)

What changes of states are considered an endothermic change What changes of states are considered an endothermic change? Remember in endothermic changes, energy is being put INTO!!! What changes of state are considered an exothermic change? Remember in exothermic changes, energy is being taken OUT!!!

Evaporation and Melting Condensation and Freezing

What is determined by the speed of molecules?

Temperature

This force acts on the particles of liquid, it causes water droplets to form

Surface Tension