Across
- 5. A pure substance of two or more elements
- 6. A particle with atoms joined by covalent bonds
- 8. Multiple atoms in a single particle
- 9. An aqueous solution (tastes sour, turns litmus paper red, conducts electricity)
- 12. A combustion that produces C, CO, CO2, H2O and energy (oxygen is limited)
- 15. A compound that separates into ions in water
- 16. magnesium oxide
- 17. A solid formed from the reaction of two solutions
- 18. pH of 7
- 19. The reaction of an acid and base, which form a salt and water
- 22. A molecule of two same or different atoms
- 23. The rapid reaction of a substance with oxygen (produces oxides and energy)
- 25. PO4
- 27. The breakdown of a metal from reactions with chemicals in environment
- 29. NO3
Down
- 1. The corrosion of iron and steel
- 2. NH4
- 3. A reaction in which a complex molecule breaks to form two simpler products
- 4. The bond of positive and negative ions attracting
- 5. The bond of sharing outer electrons between non-metals
- 7. An aqueous solution (tastes bitter, turns litmus paper blue, conducts electricity)
- 10. Law of ____________ of mass
- 11. The coating of a metal with an outer later of zinc (steel is usually coated)
- 13. 2Fe + O2
- 14. A combustion which uses all available full (oxygen is plentiful)
- 20. In single displacement, A + BC will form ________
- 21. The base added to lakes to reduce acid levels
- 24. A reaction in which two reactants combine to create more complex product
- 26. pH scale goes from one to ___________
- 28. sodium hydroxide