Question | Answer |
Law of conservation of mass | A fundamental principal in classic physics that matter cannot be created nor destroyed |
Physical Change | A change in state of matter such as solid, liquid, or gas that does not affect chemical composition |
Chemical Change | a reaction that causes the substances molecular and or atomic composition to change |
Element | A substance that cannot be separated into simpler substances and appears on the Periodic Table of Elements |
Element (diatomic) Molecule | A molecule consisting of two atoms of the same element |
Compound Molecule | Two or more atoms of the same or different elements that are chemically combined |
Chemical Reaction | A process in which the atoms or molecular structure of a substance is changed |
Chemical Equation | A symbolic representation of a chemical reaction where the reactants are given on the left side and the product on the right side |
Reactants | A substance(s) that takes part in a chemical change in a chemical reaction |
Products | A substance produced by a chemical reaction |
Coefficient | A number placed in front of a term in a chemical equation that represents how many molecules of that substance is there |
Subscript | A small number that is written after an element's symbol to signify that there are that number of those atoms in that particular molecule |
Ionic Compound | A chemical compound in which the ions are held together in a lattice structure of ionic bonds |
Covalent Compound | A compound that contains more than one element metal |
Metallic Coumpound | A compound that contains more than one element metal |
Syntheseis | The purposeful use of a chemical reaction to obtain a product or products |
Decomposition | Separation of a compound into simpler compounds or elements |
Single Replacement | A chemical reaction in which one element replaces another in a compound |
Double Replacement | A chemical reaction in which the reactants recombine to form two new compounds which have one element from each reactant |
Chemical Formula | A representation of a substance using symbols |