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Gr.6 Matter & Energy

Unit 2: Vocabulary and Concepts of Matter & Energy

Energy Transfer Different forms of energy can be transferred from place to place by radiation, conduction, or convection.
Heat Transfer The transfer of thermal energy from one object to another.
States of Matter Can be in the form of solid, liquid, gas, and plasma.
Conduction The passing of heat through a material while the material itself stays in place.
Convection The flow of heat through a liquid or a gas, causing hot parts to rise and cooler parts to sink.
Radiation The giving off of infrared rays through space, like sun light.
Kinetic Energy The energy of any moving object.
Potential Energy Stored energy.
Atoms The smallest unit of an element that retains the properties of that element. The smallest particles that make up all matter.
Molecules A group of more than one atom joined together that acts like a single particle. A combination of two or more atoms.
Mass The amount of matter an object contains; measured in the unit grams on a triple beam balance.
Closed System A contained or isolated environment without influence or interaction with outside environments (like the inside of a sealed jar).
Transformation To change from one phase to another through the process of freezing, melting, boiling or condensation.
Matter Anything that has mass and takes up space.
Mechanical Systems An arrangement of parts that work together.
Motion The movement of molecules. This increases with temperature.
Solid A form of matter that has a definite shape and takes up a definite amount of space, like a book.
Liquid A form of matter that does not take up a definite amount of space and has no definite shape, like water.
Gas A form of matter that takes up a definite amount of space and has no definite shape, like air.
Phase Change Processes such as freezing, melting, evaporation (boiling point), condensation, are all examples of this.
Plasma State of matter that exists under the conditions of high temperature and pressure, like a star.
Calorie Unit of heat, defined as the amount of heat needed to raise the temperature of one gram of water one degree Celsius.
Joule The metric unit of work; equal to one Newton-meter.
Melting Point The particular temperature for each substance at which it changes state from a solid to a liquid.
Boiling Point The particular temperature for each substance at which it changes state from a liquid to a gas.
Condensation The changing of a gas into a liquid.
Freezing Point Also known as the melting point, that temperature at which a substance changes state, either from a liquid to a solid or from a solid to a liquid.
Evaporation The slow changing of a liquid into a gas.
Sublimation Change of phase from a solid to a gas.
Proton The positive charge in an atom
Conservation of Energy Energy can be transferred through radiation, convection, and conduction, but there is no net loss or gain of energy lost or gained in the transfer.
Energy The ability to do work or to make things change.
Electron The negative charge orbiting around the nucleus of an atom.
Neutron Found in the nucleus of an atom, this particle has no charge.
Nucleus The center of an atom, contains both protons and neutrons.
Created by: salleyj