Phase Change - Titan's Disappearing Lakes
Robert Boyle
(1627 - 1691) English scientist and philosopher, one of the first people to determine air has matter. His air experiments changed how scientist made discoveries.
temperature
A measure of how hot or cold something is.
mass
A measure of the amount of matter in an object
chemist
A person engaged in chemical research or experiments.
element
A pure substance made of only one kind of atom
solid
A state of matter that has a definite shape and a definite volume
liquid
A state of matter that has a definite volume but no definite shape.
gas
A state of matter with no definite shape or volume
Boyle's Law
A statement that describes the relationship between the pressure and volume of a gas at constant temperature
scientific law
A statement that describes what scientists expect to happen every time as the outcome of an experiment
Compound
A substance made up of atoms of two or more different elements joined by chemical bonds
volume
Amount of space occupied by an object
matter
Anything that has mass and takes up space
Titan
Saturn's largest moon
melting
The change in state from a solid to a liquid
condensation
The change of state from a gas to a liquid
evaporation
The change of state from a liquid to a gas
heat
The energy transferred between objects that are at different temperatures
Chemistry
The study of the properties of matter and how matter changes
thermal energy
The total energy of motion in the particles of a substance
freedom of movement
The way molecules in a substance move around relative to each other
Robert Hooke
Worked with Robert Boyle performing many types of experiments to learn about air.
molecule
a group of atoms joined together in a particular way
phase
a noticeably different form or state of the same substance
molecular attraction
a pull between two molecules that is always the same for a substance
Saturn
second-largest and sixth planet from the Sun; has a complex ring system, at least 31 moons, and a thick atmosphere made mostly of hydrogen and helium
Atoms
smallest unit of matter
pressure
the amount of continuous force that one object puts on another object while they are touching
Freezing
the change of state from a liquid to a solid
kinetic energy
the energy an object has due to its motion
Scale
the relative size of things
refute
to provide evidence that goes against a claim
