Across
- 2. Law of ______________ of Matter - Scientific law stating that the mass of all reactants must equal the mass of all products; matter is neither created nor destroyed
- 3. Chemical __________ - A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of atoms that are present in the smallest unit of a substance
- 7. to prevent the loss of something
- 8. A measure of how much matter is present in a substance
- 9. a number written below and to the right of a chemical symbol that shows the number of specific type of atoms present
- 11. Physical or chemical characteristics of matter used to describe or identify a substance
- 13. the smallest particle of an element; made of electrons, protons, and neutrons
Down
- 1. chemical ________ - is chemical formula and symbols written to represent a reaction
- 4. the simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically
- 5. a substance that takes part in and undergoes change during a chemical reaction
- 6. Chemical _________ - The process by which one or more substances change to produce one or more different substances
- 7. A number placed in front of a chemical symbol or formula that represents the number of molecules
- 10. A substance produced during a chemical reaction
- 12. Chemical _________ - Method or means of changing one or more chemicals or chemical compounds