Chemistry

1. level defined by the amount of rings an atom has
2. A non-uniform combination of more than one substance
5. the process of a liquid turning into a gas
7. Poisonous materials wich cause immediate and severe harm
12. the core of an atom
13. The sum of the number of protons and neutrons in a nucleus
16. An element that exists in various colors and phases, is brittle, and does not conduct electricity or heat well
19. A physical property defined as a substance’s mass divided by its volume
20. a chemical substance composed of many identical molecules composed of atoms from more than one element
21. Atoms of the same element that have different numbers of neutrons
22. a negatively charged ion
23. may explode if heated punctured or dropped
24. a positively charged ion
27. bond The connection between two atoms in a molecule
28. relating to, measuring, or measured by the quality of something rather than its quantity.
29. the sum of protons in an element
30. An educated guess

1. any substance that cannot be decomposed into simpler substances by ordinary chemical processes.
3. may cause fire or explosion
4. An indication of the size of an atom.
6. may ingnite if exposed to heat or sparks
8. A positively charged subatomic particle
9. the process of a solid element becoming a liquid
10. the process of a solid turning into a gas
11. A uniform mixture of more than one substance that behaves as a single substance
14. to, measuring, or measured by the quantity of something rather than its quality.
15. a neutral subatomic particle
17. Formed when electrons are taken/given to an element
18. An element that conducts electricity and heat well and is shiny, silvery, solid, ductile, and malleable
19. The process of a gas becoming a solid
25. a negatively charged subatomic particle
26. Materials which can cause or suspected of causing long term health effects