2.1
States of Matter
States of Matter
This state of matter has a definite shape and definite volume.
What is solid?
The change from liquid to solid is known as this.
What is freezing?
A gas has a pressure of 2.0 atm at 300 K. This is the pressure at 600 K, assuming volume stays constant.
What is 4.0 atm?
The amount of space matter occupies.
What is volume?
Snow on the ground disappearing on a cold but sunny day is an example of this process.
Sublimation
These solids, such as salt or sugar, have particles arranged in a regular repeating pattern.
What are crystalline solids?
A pure crystalline solid melts at this specific temperature.
What is the melting point?
When temperature decreases at constant volume, gas pressure does this.
What is decreases?
The force per unit area applied by gas particles as they collide with surfaces.
What is pressure?
A balloon shrinking when placed in a freezer demonstrates which gas law?
What is Charles’s Law?
Particles in this state of matter are packed closely but can move around one another, allowing the substance to flow.
What is liquid?
This process occurs when particles of a solid skip the liquid phase entirely and form a gas.
What is sublimation?
This law states that pressure and volume are inversely proportional.
What is Boyle’s Law?
Randomly arranged particles, as in rubber or plastic.
What is an amorphous solid?
Soup bubbling on a stove shows this type of vaporization happening below and at the surface.
What is boiling?
This superheated state is extremely common, making up over 99% of the visible universe,
What is plasma?
The boiling point of water decreases at high elevations because this is lower in places like Denver.
What is atmospheric pressure?
A balloon contains 2.5 L of gas at 350 K. Temperature needed for the balloon to shrink to 1.25 L at constant pressure.
What is 175 K?
The measure of the average kinetic energy of particles.
What is temperature?
A basketball left in a cold car becomes soft because pressure goes down as temperature goes down, this is explained by which gas relationship?
What is Gay-Lussac’s Law?
Molecules pull together at the surface of a liquid, allowing water striders to walk on water.
What is surface tension?
This is the total kinetic and potential energy of the particles in a substance.
What is thermal energy?
Volume occupied by 0.10 mol of gas at 300 K and 100 kPa.
What is 2.49 L?
A substance that flows (liquids and gases).
What is a fluid?
Air trapped in bubble wrap protects fragile items because gas particles exert this physical property.
What is pressure?