Across
- 2. A particle with no charge
- 7. Measure of the amount of matter in a object
- 8. Mass in grams of one mole of a substance
- 10. Electrons in the outermost shell
- 13. The ability to produce a change in the composition of matter
- 14. Reactivity, toxicity, flammability, heat of combusion, etc.
- 15. Mass per unit volume of a substance
- 16. A particle with a negative charge
- 20. Theory that all matter is made up of tiny indivisible particles (atoms)
- 21. The nucleus of an atom splits into two or more smaller nuclei
- 22. A particle with a positive charge
- 23. An arrangement of chemical elements based on the periodic law
Down
- 1. 6.023x10^23
- 3. Number of protons or electrons found in an element of a given chemical element
- 4. The mass of a single atom of chemical element
- 5. Property of matter or energy that can be measured
- 6. Multiple nuclei join together to form a heavier nucleus
- 9. The basic unit of a chemical element
- 11. Outside part of an atom around the atomic nucleus
- 12. A way scientists convert units of measurement
- 17. An atom or group of atoms that carries a positive or negative electric charge
- 18. A fundamental interaction of nature
- 19. Atoms that have the same number of protons and electrons but different number of neutrons