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Changes of Matter
Review for test 3
Term | Definition |
---|---|
Chemical Change | A change in which something new is formed |
Physical Change | A change in a property of a substance that can be observed with the five senses |
Chemical Property | A property of a substance that can not be observed and can only be changed through a chemical reaction |
Physical Property | A property of a substance that is easily observed and changed |
Synthesis | A chemical change in which two things become one |
Decomposition | A chemical change in which a compound breaks down into its core components |
Single Replacement | A chemical change in which one component is exchanged for another |
Double Replacement | A chemical change in which components are traded between compounds |
Atom | The smallest known unit of matter |
Molecule | A combination of atoms |
Conservation of Mass | Mass cannot be destroyed or created |
Reactants |