Across
- 2. An attribute, quality, or characteristic of something
- 4. A scientific theory which states that matter is composed of discrete units called atoms
- 7. When two or more substances react to form a new substance,the new substance has different properties
- 9. Created my the gain or loss of electrons
- 10. The number of protons and electrons in the element
- 11. A table in which elements are organized by their physical and chemical properties
- 12. Carries a negative charge
- 13. A substances that is only made up of one type of Atom
- 15. When a material changes state, or appearance, but doesn't change its composition
- 16. Workplace Hazardous Material Information System
- 17. Substance that is produced in the reaction
- 18. Substances that start a chemical reaction
Down
- 1. The average mass of an element,also known as the atomic mass unit
- 2. The release of heat
- 3. Smallest part of an element, that contains protons,neutron,being held together by the neutron,with electrons orbiting around.
- 4. A formula that identifies the element in a compound and the amount in each element
- 5. Made up of protons and neutrons
- 6. The absorption of Heat
- 7. A law that explains that matter cannot be created nor destroyed
- 8. Carries no charge
- 11. A pure substance formed when 1 metal and 1 non-metal combine
- 13. Carries a positive charge
- 14. When 2 or more elements combine
- 15. When 2 non-metals combine and create a pure substance
- 18. Anything that has mass or occupies space