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atom The most basic unit of matter
matter a basic way of classifying things (solid, liquid, gas)
elements one of a class of substances that cannot be separated into simpler substances by chemical means.
compounds two elements that are chemically combined
mixture two elements that are physically combined
heterogenous a mixture that has large parts that u can see
homogenous a mixture where it has small parts that you can not see because they are mixed together
physical properties what you can see on an object or feel
chemical properties what you can not see because it is chemically combined into the object
physical changes when an object just changes physical properties and not chemical
chemical changes When an object changes completely
periodic table a table that shows all of the elements ever found and logs their atomic mass and number
metals something on the periodic table that is solid at room temperatur
nonmetals something on the periodic table that is a liquid or gas at room temperature
metalloids a cross between metals and nonmetals
luster the shine of a metal
conductor a metal that can conduct heat or electricity
mallebale they can be bent and pounded into different shapes
ductile they can be drawn into wires without breaking
high density having a high concentration
dull they do not shine
non-conductors metals that do not conduct electricity or heat
brittle fragile, easy to break
periods of the periodic table the rows on the periodic table
Groups/families of the periodic table The columns on the periodic table
Atomic Number The number of protons in an atom
Atomic Mass/weight The weight of the neutron in an atom
neutrons a neutrally charged particle
protons a positively charged particle
electrons a negatively charged particle
chemical formulas The formula that shows how many elements are in a compound
subscripts the thing that show how many elements there are in that compound
chemical symbols one to three letters that show what the element is
chemical equation used to represent that a chemical reaction has occurred
reactant -substances broken apart or combined in a chemical reaction; located on the left side of the arrow.
product new products formed in a chemical reaction; located on the right side of the arrow
Law of conservation of matter the law that states that no matter can be created or destroyed but only change form
Created by: 10019275