The Nature of Matter
the three basic states of matter
What are solids, liquids and gasses?
particles that make up all matter
What are atoms?
a mixture of metal with another metal or another substance
What is an alloy?
the change of a solid to a liquid as heat is added
What is melting?
the energy of moving objects
What is kinetic energy?
the state of matter that has no fixed shape and no volume
What is a gas?
the amount of space a substance takes up
What is volume?
substances that can transfer heat or allow electricity to flow through them
What are conductors?
the change in state from solid to gas skipping the liquid state
What is sublimation?
the average kinetic energy of the particles of a substance
What is temperature?
the state of matter that has a definite shape and a definite volume
What is a solid?
the amount of matter in a substance
What is mass?
carbon compounds which are flexible and can be shaped; many are synthetic
What are plastics?
the change in state from liquid to gas as heat energy is gained on the surface of the liquid
What is evaporation?
the temperature at which particles show no movement
What is absolute zero? What is -273 degrees Celsius, or 0 Kelvin?
the state of matter that has a definite volume and takes the shape of its container
What is a liquid?
mass divided by volume
What is density?
substances that do not transfer heat and do not allow electricity to flow through them
What are insulators?
the change in state when a gas becomes a solid, skipping the liquid state
What is deposition?
Solids can be classified into these two categories:
What is a crystalline and amorphous?
changes that can be reversed are known as
What are physical changes?
the temperature at which a solid becomes a liquid
What is melting point?
the physical characteristic that allows a substance to be bent and hammered into shape
What is malleability?
the change in state when a liquid loses enough heat energy to become a solid
What is freezing?
Molecules have random, free motion in this state
What is a gas?