Across
- 2. elements that are poor conductors of heat and electricity; located on right side of periodic table
- 5. a number in front of the chemical formula
- 6. a substance made up of atoms of two or more different elements
- 7. an electrically neutral (uncharged) particle in the nucleus of an atom
- 10. a table of elements, arranged by atomic number, that shows the patterns in their properties
- 13. a positively charged particle in the nucleus of an atom
- 16. substances that are reacting in a chemical reaction; found on the left of a chemical equation
- 19. a type of mixture where different substances are visible
- 20. shells or "rings" around the nucleus of an atom where electrons are found
- 21. a number used to indicate the number of atoms in the formula for a compound
- 23. elements that are good conductors of electricity and heat; located on left side of periodic table
- 24. a pure substance that is made up of only one kind of atom and cannot be broken down
- 25. the smallest component of an element having the same chemical properties of the element
- 26. a change in a substance that does not involve a change in the appearance of the substance
- 27. a unique number for each element that equals the number of protons in an atom of that element
Down
- 1. the elements or compounds produced by a chemical reaction; found on the right of a chemical equation
- 3. a formula that gives the elements in a compound and the ratio (number) of atoms
- 4. a type of mixture that looks the same throughout
- 8. a negatively charged, fast moving particle found outside of the nucleus
- 9. a column going up and down on the periodic table
- 11. elements with properties that fall between those of metals and nonmetals; along the bold staircase
- 12. horizontal (left to right) row on the periodic table
- 14. the ease and speed with which an element combines, or reacts, with other elements and compounds
- 15. a one or two letter representation of an element
- 17. a change in matter that produces one or more new substances
- 18. number of electrons in the outer shell of an atom
- 22. number of protons and neutrons added together