Across
- 1. usually a one- or two letter set of charaters that is used to identify a element
- 4. the chemical products created in chemical reaction
- 6. A combanation of symbols that shows the ratio of elements in a compound
- 8. A process in which substances undergo chemical changes
- 9. the number of protons and neutrons in the nucleus
- 10. A substance that takes part in and undergos change during a reaction
- 11. the central core of an atom,containing protons and usually neutrons
- 12. A combanation of two or more atoms that are bonded together
- 15. a display of chemical elements to organize
- 16. A symbolic representation of a chemical reaction in form of symbols
- 17. the smallest particle of an element
- 19. two or more substances that are mixed together but not chemicaly combined
- 23. electrons in the outer shell of an atom
- 26. the number of protons in the nucleus determines location in the periodic table
- 28. A transfer of electrons between a metal and a nonmetal
- 29. small positively charged particle in the nucleus of an atom
- 30. a tiny negitivity charged high-energy particle that moves in the space outside the nucleus of an atom
Down
- 2. particles smaller than atoms:protons neutrons or electron
- 3. A change that alters the form or appearence of a substance but does not make the material into another substance
- 5. A stubstance made of two or more elements chemically combined
- 7. A change in matter that produces new stubstances
- 13. the force that holds two atoms together
- 14. A single kind of matter that has distinct physical and chemical properties
- 18. anything that has mass and occupies space
- 20. chemical bond with shared electrons between two nonmetals
- 21. A numeral or constant quantity placed before and multiplying the variable
- 22. A region of negative charge surrounding an atomic nucleus
- 24. atomic mass unit-number of protons and neutrons
- 25. A substance that cannot be broken down into other substances by chemical or physical means
- 27. small uncharted particle in the nucleus of an atom