Unit 2 Lesson 1
A substance that has inertia and occupies physical space. It is anything that has mass and volume.
What is Matter?
A form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
What is Kinetic Energy?
The measure of the average kinetic energy of the particles.
What is Temperature?
Something that has two or more elements held together by chemical bonds.
What is Molecule?
A measure of the amount of matter an object contains.
What is Mass?
Particles that are closely spaced and in contact with each other in a structured pattern. These particles vibrate in place without changing their positions.
What is Solid Particles?
This is the temperature at which a solid changes into a liquid.
What is Melting Point?
A thing that is composed of two or more separate elements.
What is Compound?
Is the measure of how much space an object takes up.
What is Volume?
Particles that are spaced far apart and only occasionally collide with each other. They change position relative to each other constantly because they are moving quickly.
What is Gas Particles?
This is the process by which water changes from a liquid to a gas or vapor. It is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.
What is Evaporation?
This is a three-carbon alkane with the molecular formula C3H8. It is a gas at standard temperature and pressure, but compressible to a transportable liquid.
What is Propane?
Particles of pollen suspended in water tend to more in random directions.
What is Brownian Motion?
Particles that are spaced and in contact with each other. They move past and around each other, so they change relative positions as they move.
What is Liquid Particles?
This is the change of the physical state of matter from the gas phase into the liquid phase, and is the reverse of vaporization.
What is Condensation?
A substance that cannot be separated into similar substances by chemical changes.
What is Element?
The rate thermal energy spreads through a substance.
What is Thermal Conductivity?
This is the state of matter that has a fixed volume, but can change shape.
What is Liquid?
This is the total kinetic energy of all particles in a substance. Adding this to a substance increases the kinetic energy.
What is Thermal Energy?
This is a sample of matter that has specific chemical and physical properties, such as appearance, melting point, and reactivity.
What is Pure Substance?