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Matter and Atoms

QuestionAnswer
Matter anything that has mass and occupies space
Atom smallest unit of matter that has the same properties
Element substance with one type of atom
Compound substance made of two or more elements in a fixed proportion
Mixture materials made up of two or more substances that can be easily separated, not always a fixed proportion
Solution a homogeneous mixture that remains contantly and uniformly mixed had has particles that are very small(can't see)
Physical Property any characteristic of a material that can be observed without changing the identity of the material
Chemical Property any characteristic that indicates whether it can undergo a certain chemical change
Law of Conservation of Mass states that the mass of all substances present before a chemical change equals the mass of all substances after the change
Proton positively charged particle in the nucleus of an atom
Neutron neutral particle in the nucleus of an atom
Electron negatively charged particle outside the nucleus of an atom
Electron cloud the area outside the nucleus of an atom where an electron is most likely found
Isotope different form of an atom that has more neutrons
Ion a charged atom (positive or negative)
Atomic number the number of protons in an atom
Atomic mass average mass of all the isotopes of an atom;protons + neutrons
Created by: lraper
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