States of Matter
What solid does not melt at a distinct temperature?
Amorphous
What solid melts at a distinct temperature?
Crystalline
What are the 2 types of solids
Crystalline and Amorphous
What is another name for Liquids?
Fluids, meaning "substances that flow"
Viscosity
Is a liquid's resistance to flow. Ex: pouring honey and pouring water. Honey flows more slowly than water because it has a higher viscosity than water.
Temperature
Is a measure of he average energy of motion of the particles. The faster the particles are moving, the greater their energy and higher the temperature.
What are the 2 conditions that affect gas?
Pressure and Temperature
Describe solids, liquids and gases in terms of shape and volume.
Solids have a definite shape and volume. Liguids can change shape but NOT volume. Gases change both shape and volume.
What are the 2 important properties of liquids.
Surface tension and Viscosity
Pressure
The amount of outward force exerted on a given area by the gas particles.
Surface tension
The force acting on the particles at the surface of a liquid that causes the liquid to form spherical drops. Different liquids have different surface tensions. Ex. rubbing alcohol has a lower surface tension than water, but mercury has a higher surface tension that water.
States of Matter
The physical forms in which a substance can exist; states include solid, liquid, gas (and plasma).
Gas
The state in which matter changes in both shape and volume. A gas takes the shape and volume of its container.
Solid
The state in which matter has a definite shape and volume
Liquid
The state in which matter takes the shape of its container and has a definite volume.
Amorphous
They are solids composed of atoms or molecules that are in NO particular order. Each particle is in a particular spot, the particles are in NO organized pattern. EX. rubber and wax.
Crystalline
They are solids that have a very orderly, 3- dimensional arrangement of atoms or molecules. The particles are arranged in a repeating pattern. Ex. iron, diamond, and ice.
Are Liquids and Gas both considered "fluids" ?
Yes, because unlike solids, both Liquids and Gas flow.
Can the volume of gas change?
Yes, gas particles spread apart, filling all the space available. Thus a gas has neither definite shape nor definite volume.