Across
- 2. atoms or a group of atoms that have been electrically charged
- 4. positive charges
- 5. a new substance produces in a chemical reaction between reactants.
- 6. negative charges
- 8. release heat
- 11. chemical combination of two or more elements in a specific ratio
- 12. results from a chemical reaction
- 16. made up of two or more substance combined
- 19. mixtures are easy to see
- 20. anything on the periodic table
- 22. the experiment is in the open
- 23. characteristics that can be used to describe a substances
Down
- 1. anything that has mass and occupies space
- 2. are pure substance formed as a result of the attraction between particles of opposite charges
- 3. absorbs heat
- 7. two or more substance are combined to form a new substance.
- 9. made up of one type of matter
- 10. the average mass of an element in atomic mass units
- 13. nonmetals combine
- 14. an element is defined by the number of protons
- 15. are subtance that help a reaction rate
- 17. the experiment is closed a bag
- 18. if it a solid or a liquid how it is measured
- 21. a substance that reacts with another substance.
- 24. two or more substance that look like are one