Across
- 4. one of the horizontal rows of the periodic table and the elements it contains
- 7. a chemical element or substance that possesses properties of both metals and non-metals
- 9. science that studies substances and chemicals
- 10. a neutral unit or subatomic particle that doesn't have any net charge
- 12. a material with a definite chemical composition
- 14. the phase transition of a substance from a solid to a liquid
- 15. a column of the perodic table and the elements that share it
- 19. a chemical element with the atomic symbol N and atomic number 7
- 20. a species of atoms having the same number of protons in the atinuc nuclei
- 23. of or pertaining to the atomic nucleus
- 24. a subatomic particle with a negative net charge
Down
- 1. one of four fundamental states of matter with relatively low energy particles that are close together
- 2. a chemical element in its smallest form
- 3. a cylinder like container used for measuring and holding liquids
- 5. the mass of an atom
- 6. a chemical reaction in which a material in the environment results in dissolution of the material
- 8. a substance that is consumes in the course of a chemical reaction
- 9. any element or compound that facilitates a speed increase of a chemical reaction
- 11. a systems ability to work
- 13. any chemical element which is a good conductor of electricity and heat
- 16. a chemical element with the atomic symbol O and atomic number 8
- 17. a scale use to specify acidity or basicity
- 18. any of the five non-metallic elements of the 17th group
- 21. a compound that gives a pH of less than 7.0 when dissolved in water
- 22. a subatomic particle with a positive electric charge