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Science Vocabulary

QuestionAnswer
Law of Conservation of Mass states that the mass of an isolated system will remain constant over time.
Physical Change changes affecting the form of a chemical substance, but do not change the chemical composition of that substance
Chemical Change occur when a substance combines with another to form a new substance
Element simplest form of matter; substance that cannot be broken down into simpler substances
Chemical Formula a way of expressing information about the atoms that constitute a particular chemical compound.
Element (Diatomic) Molecule molecules composed only of two atoms, of the same chemical elements.
Compound Molecule a molecule that contains at least two different elements
Chemical Equation A way of describing a chemical reaction
Chemical Reaction a process that leads to the transformation of one set of chemical substances to another
Reactants (in a chemical equation) Substances that go through a chemical change
Products (in a chemical equation) Substances that result from a chemical change
Coefficient (in a chemical equation) The coefficients next to the symbols are the absolute values of the stoichiometric numbers
Subscript (in a chemical equation) the numbers used to tell you how many atoms of an element are present in the equation
Ionic Compound a chemical compound in which ions are held together in a lattice structure by ionic bonds
Covalent Compound a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms
Metallic Compound a compound that contains one or more metal elements
Synthesis two or more chemical species combine to form a more complex product
Decomposition the separation of a chemical compound into elements or simpler compounds
Single Replacement occurs when two different cations switch places to combine with the same anion
Double Replacement the cations and anions of two different compounds switch places
Created by: s1107856