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Describing Matter Measuring Matter Solids, Liquids, And Gases Behavior of Gases Physical & Chemical Changes 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Particles Of Matter

Properties for a given substance that never change and can be used to identify the substance

What are characteristic properties?

The temperature at which a liquid boils

What is boiling point?

“ The best mixed ” of all possible mixtures

What is a solution?

A substance made up of only one kind of matter that has definite properties

What is a pure substance?

A pure substance formed from chemical combinations of two or more different elements

What is a compound?

A measurement of how much matter an object contains

What is mass?

A measure of the force of gravity pulling on an object

What is weight?

The amount of space that matter occupies

What is volume?

The measurement of how much mass is contained in a given volume

What is density?

A system of measurement based on multiples of ten and on established measures of mass, length, and time; used by scientists to measure the properties of matter

What is the International System of Units (SI)?

The smallest particle of an element

What is an atom?

A group of atoms that are joined together and act as a single unit

What is a molecule?

The force that holds two atoms together

What is a chemical bond?

Greek philosopher who suggested that there were smallest possible “ pieces ” of everything

Who is Democritus?

British schoolteacher who inferred that atoms can ’ t be broken into smaller pieces

Who is John Dalton?

A state of matter with a definite shape and a definite volume

What is a solid?

A state of matter with a definite volume but with no definite shape

What is a liquid?

Any substance that “ flows ”

What is a fluid?

The resistance of a liquid to flowing

What is viscosity?

A state of matter with no definite volume and no definite shape

What is a gas?

A measure of the average energy of motion of the particles of a substance

What is temperature?

The force exerted on a surface divided by the total area over which the force is exerted

What is pressure?

When the temperature of a gas is increased at constant temperature, the volume of the gas decreases

What is Boyle ’ s Law?

When the temperature of a gas is decreased at constant pressure, its volume increases

What is Charles ’ s Law?

What are three properties of a gas that you can measure?

What are volume, temperature and pressure?

A change that alters the form of a substance but does not change it to another substance

What is a physical change?

A change that creates a new substance with different properties

What is a chemical change?

A change in state from a solid to a liquid

What is melting?

A change in state from a liquid to a solid

What is freezing?

A change in state from a liquid to a gas

What is vaporization?

Make your wager

The principle that energy cannot be created or destroyed; thus, the total amount of energy remains the same during physical or chemical change

What is the law of conservation of energy?