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1st 6-Weeks DA

1st 6-Weeks District Assessment Review 6th Grade

TermDefinition
Atom The smallest particle of an element, made of electrons, protons, & neutrons.
Element A pure substance composed of the same type of atom throughout.
Compound A substance made of 2 or more elements that are chemically combined in fixed amounts.
Substance Any form of matter that is uniform throughout & has consistent properties.
Periodic Table of Elements A table in which all the known elements are arranged by properties & are represented by 1 or 2 letters, referred to as chemical symbols.
Lithosphere A rigid outer layer of Earth made up of the uppermost part of the mantle & crust; litho = rock; sphere = globe
Hydrosphere All of the water on Earth; hydro = water; sphere = globe
Biosphere The sum of all living matter, made of a limited number of elements including oxygen, carbon, hydrogen, nitrogen, calcium, & phosphorus; bio = life; sphere = globe
Atmosphere The layer of gas surrounding planet Earth, held in place by gravity; composed of a limited number of elements, primarily nitrogen & oxygen; atmo = air; sphere = globe
Matter Anything that has mass & takes up space.
Properties Physical & chemical characteristics of matter used to describe or identify a substance.
Volume A measure of the space that matter occupies.
Mass A measure of how much matter is present in a substance.
Mixture A combination of 2 or more substances which do not chemically combine.
Uniform Composition Made of the same evenly distributed substance or combination of substances throughout; uni = one
Periodic Table of Elements Table in which all the known elements are arranged by properties; represented by 1 or 2 letters, known as chemical symbols.
Physical Property Measurable characteristics that describe the physical state of something, including mass, magnetism, temperature, density, shape, volume, & conductivity.
Metals Most elements are metals; they're typically solid, shiny, malleable, & good conductors of heat & electricity.
Non-Metals Elements that are typically not shiny, not malleable, & poor conductors of heat & electricity; usually gases or brittle solids.
Metalloids Elements that have properties of both metals & nonmetals; sometimes referred to as semiconductors.
Luster The way the surface of a mineral reflects light; either metallic or non-metallic such as silky, dull, glassy, or resinous.
Conductivity The ability of a substance to transfer heat or electrical energy.
Malleability The ability of something to be reshaped without breaking.
Brittle A tendency to break rather than flex or bend.
Insulator A material that does NOT conduct heat or electrical current.
Conductor A substance that readily transfers heat or electrical energy.
Semiconductor A substance that shows the property of electrical conductivity between that of a conductor & that of an insulator; foundation of modern electronics.
Matter Anything that has mass & takes up space.
Classify Sort or put into groups based on similar & dissimilar physical, chemical, or biological characteristics.
Element A pure substance composed of the same type of atom throughout.