Chemical Reactions and Matter
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16 Terms
law of conservation of mass
mass is neither created nor destroyed in chemical reactions
property
a characteristic of a substance that can be observed or measured
substance
made of one type of particle throughout
dissolve
to break apart into particles too small to see and mix completely in the liquid
soluble
describes a material that can dissolve in a particular substance
insoluble
describes a material that does not dissolve in something else
mixture
a blend of 2 or more substances
flammability
how a substance interacts with fire
density
how much mass is in a certain volume
chemical reaction
when particles that make up old substances are broken apart and the atoms that make them up are rearranged to form new substances
atoms
the smallest particles of an element
molecules
are made of atoms that are joined together
chemical formula
tells the types and numbers of atoms that make up a molecule of a substance
element
a pure substance made of only one type of atom
reactants
the substances that go in to a chemical reaction
products
the new substance(s) produced by a chemical reaction