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Metals nonmetals
6th grade metalloids
Term | Definition |
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periodic table of elements | a table in which all the known elements are arranged by properties and are represented by one or two letters, referred to as chemical symbols. |
physical property | measurable characteristics that describe the physical state of something, including mass, magnetism, temperature, density, shape, volume and conductivity. |
metals | most elements are metals; they are typically solid, shiny, malleable, and good conductors of heat and electricity. |
nonmetals | elements that are typically not shiny, not malleable and poor conductors of heat and electricity; usually gases or brittle solids. |
metalloids | elements that have properties of both metals and 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 and that of an insulator; the foundation of modern electronics. |
matter | anything that has mass and takes up space. |
classify | sort or put into groups based on similar and dissimilar physical, chemical or biological characteristics. |
element | a pure substance composed of the same type of atom throughout. |