Question | Answer |
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 |