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anything that has mass and occupies space. All matter is made up of elements, compounds or a mixture of elements and compounds
the smallest particle of an element. In their stable state atoms are neutral, in that6 they have the same number of positive protons as they do negative electrons
an arrangement of elements in a table according tot their atomic numbers and physical properties
a set of elements in one column in the periodic table. Elements in the same group have similar properties
a set of elements in one row in the periodic table. These elements with similar energy levels
a category of elements characterized by a shiny surface, the ability to be easily shaped, and high conductivity of electricity and heat.
a category of elements characterized by a brittle nature, little to no luster, and poor conductivity of electricity and heat.
a category of elements that share some properties with metals and some with non metals, along the zigzag line on the periodic table of elements
a physical property of a substance, the amount of heat that must be absorbed or lost for 1 gram of the substance to change its temperature by 1 oC
characteristics that can be observed or measured without changing the identity of matter, color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density.
characteristics that describe how a substance behaves in chemical reactions, heat of combustion, precipitate, reactivity with water, PH, and electromotive force
formed when the atoms of two or more elements combine but do not form a new substance (sugar water)
one or more substances change to produce one or more new substances with different chemical properties
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