Across
- 2. A mixture in which all parts are mixed together and different substances cannot be viewed within it and they lose their original properties
- 4. The mass of all substances that are present before a chemical change (reactants) equals the mass of all the substances that remain after the change (products)
- 7. When two or more substance that are NOT chemically combined
- 8. The smallest constituent unit of ordinary matter that has the properties of a chemical element
- 11. A change in size shape anmd state of matter in which the identity of substance remains the same
- 12. when two or more different types of atoms chemically combined
- 14. When the number of neutrons and protons have different amounts in the nucleus
- 15. A characteristic of a material that you can observe that produces one or more new substances
Down
- 1. any substance made up of only one type of atom
- 3. a heterogeneous mixture with particles that never settle
- 5. A mixture in which all parts can be clearly visible and each part retains its own original properties
- 6. A type if matter with a fixed composition it is al the same product
- 9. Any characteristics of a material that you can observe without changing the identity of the substance
- 10. A change from one substance to another
- 13. Anything that has mass and takes up space