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Chemistry Vocab Review

Across
Matter that is an element or a compound
A change in the size, shape, color, or state of matter
Sum of the number of protons and neutrons in atom's nucleus
A heterogeneous mixture containing tiny particles that never settle out
Elements having properties of both metals and nonmetals
Vertical columns where elements are made up of similar properties
Elements that usually are gases or brittle solids at room temperature
A mixture in which different parts can be easily distinguished
Elements usually having these common properties: shiny, good conductors of heat & electricity, are solids at room temperature
A horizontal row in the periodic table
A mixture in which different materials are blended evenly so that the mixture is the same throughout
Atomic particle with a positive charge that is part of an atom's nucleus
Atoms of the same element that have different numbers of neutrons
A homogeneous mixture containing particles so tiny that they cannot be seen even with a microscope
Substance made of the combined atoms of two or more elements
Any characteristic of a material that can observed without changing the identity of the material itself
Down
The change of substances to different substances
The number of protons in an atom's nucleus
Region where electrons most probably are found surrounding the nucleus of an atom
A diagram to represent electrons in the outer energy level of an atom
Process that destroys colloid structure
The average mass of an element is the average mass of a mixture of its isotopes
The positively charged center of an atom that contains protons and neutrons
Substance in which all the atoms in a sample are alike
Negatively charged particles that move around the nucleus of an atom
Atomic particle with no charge that is part of an atom's nucleus