Combustible

Word describing a substance that will burn, such as wood.

Inertia

The tendency of matter to remain at rest or in uniform motion unless acted upon by a force.

Reactivity

The chemical property of a substance that indicates its tendency to interact chemically with other substances.

Conductor

A material that resists the flow of heat or electricity.

Insulator

A material that resists the flow of heat or electricity.

Semi-Conductor

Substance that can conduct electricity under certain conditions.

Density

The measure of matter contained in a given volume.

Malleability

Ductility

A physical property that describes the ease with which a material can be drawn into wire.

Solubility

A physical property that describes how readily a substance dissolves in another substance.

Matter

Anything that has mass, takes up space , and resists a change in motion.

Solution

A homogeneous mixture in which a substance is dissolved into another substance.

Flammable

Word that describes a material that will ignite easily and burn vigorosly.

Plasma

A state of matter, existing only at extreamly high temperatures, in which electrons are seperated from atoms.

Substance

Homogeneous matter that always has the same composition.

Dependent Variable

The variable that is being measured in an experiment; it responds to the change of an independent variable.

Law

A description of a natural occurence that has been observed many times.

Quantitive

Observations that do not involve measurements.

Hypothesis

A possible answer to a question or solution to a problem.

Model

Anything either physical or mental, used to help visualize occurrences and objects that cannot be directly observed.

Scientific methods

Independent variable

A variable that is changed by the experimenter.

Operational defination

A description of a variable in terms of how it will be measured.

Theory

A reasonable explanation of a natural occurance.

Inference

A logical conclusion based on observation and data.

Qualitative

Observations that do not involve measurements.

Variable

A changeable factor in an experiment that may affect an outcome.

Anti particle

Are produced in nuclear reactions but do not exist for long.

Alpha particle

Has two protons and two neutrons. 

Atomic number

Equal to the mass of a proton or a neutron.

Atomic mass unit

Dalton

Atomic number

A number assigned to an element.

Beta particle

Has an electron.

Electron

Negatively charged particles in an atom.

Gamma rays

Rays with an energy similar to x-rays.

Hadrons

Particles that respond to strong Nuclear forces.

Isotopes

Atoms of an element that each have diffrent numbers of neutrons.

Leptons

Have relatively small masses and do not exhibit strong nuclear interactions.

Neutrons

A particle with no charge, mass is slightly greater then a proton.

Proton

A posetively charged particle found in an atom's nucleus.

Quark

Interact with each other by exchanging massless particles.

Transmutation

Change caused by radioactive decay of one element into another.

SI

System International Measurement system based on the metric system.

Mass

Mass of an object is the amount of matter it contains.

Kelvin

The SI unit of temperature.

Exponent

5³=5x5x5

Metric

Relating to the meter or metric system.

Scientific notation

Method of expressing numbers in terms of a decimal number.

Standard

Something you have come to expect.

Technology

The scientific application to everyday life.

Weight

The amount of quantity or heaviness of mass.