Across
- 2. The smallest particle of an element; made of protons, neutrons and electrons
- 4. New substances created from 2 or more substances with different chemical and physical properties
- 8. Shorthand notation system using chemical symbols and subscript numbers representing the type of chemical and number of atoms to form the smallest unit of a substance
- 9. A number placed in front of a chemical symbol or formula that represents the the number of molecules
- 10. A solid substance that is formed from a chemical reaction
- 11. A substance produced by a chemical reaction
- 12. Characteristics that can be observed or measured when undergoing a chemical change into a new substance
- 14. Chemical formulas and symbols written to represent chemical reactions
- 15. A single substance, either elements or compounds, with a definite definition and properties
- 16. A characteristic that can be observed without changing the substance
- 17. A substance that takes part in and undergoes a change in chemical reaction
- 19. A measure of the amount of matter in an object
Down
- 1. Scientific law stating that matter/mass can not be created or destroyed; mass of reactants and products must be equal
- 3. Chemical and physical characteristics of a substance that can be observed and used to classify matter
- 4. The process of changing one or more substances into new different substance(s)
- 5. Materials made from natural substances that undergo chemical reactions
- 6. Simplest unit of chemical compounds created from 2 or more atoms joined together
- 7. The method of changing one or more substances
- 13. A number below and to the right of a chemical symbol to represent the number of a specific type of atom present
- 18. To prevent the loss of something