Science Crossword By:Mack Fayant 9Mi
Across
- 2. number of protons in the nucleus of one atom of an element
- 4. a reaction when 2 or more substances combine to make a new substance
- 6. description of how substances interacts with other substances
- 9. pure substance that cannot be broken down into other substances
- 10. group 1 in the periodic table not including hydrogen
- 11. group 17 elements in the periodic table; the most reactive non-metals
- 13. group 18 elements in the periodic table
- 14. pure substance formed when at least on metal and one non-metal combine
- 16. catalyst involved in a chemical reaction in living things
- 18. element that has both metallic and non-metallic properties
- 19. group of atoms joined by covalent bonds
Down
- 1. the vertical column in the periodic table
- 2. group 2 in the periodic table
- 3. positively charged center of an atom
- 5. the sum of the number of protons and neutrons
- 6. combination of symbols that represents a compound
- 7. the smallest part of an element
- 8. change that does not change the state of the reactant
- 12. mass of one atom of an element
- 15. dull brittle element that does not conduct electricity
- 17. shiny malleable ductile element that conducts electricity
- 19. anything that has mass and occupies a space