3. 100 200 400 300 400 OrangeGreenGreyBlue 300 200 400 200 100 500 100

4. Ionic bond when an atom lends one or more electrons to another that receives them.

5. Covalent bond Bond that forms when atoms share electrons

6. Atomic number The periodic table of the elements arranges the elements in order of increasing …..

7. metals Tend to be hard, shiny, and are good conductors of heat and electricity.

8. Non-metals tend to have dull surfaces, are good insulators but poor conductors of heat and electricity

9. periods the horizontal rows on a periodic table

10. Families the vertical columns on a periodic table

11. Noble gases the most stable elements on the periodic table of the elements.

12. liquids Mercury and bromine exist as ________ at room temperature

13. gases Hydrogen and oxygen exist as gases at room temperature

14. solids Copper and lead exist as ______ at room temperature.

15. Physical Length, mass, volume, and density are examples of _________ properties

16. chemical Flammability and corrosiveness are examples of _________ properties

17. physcial Tearing a sheet of paper in half is an example of a __________ change

18. chemical Burning a sheet of paper is an example of a ______ change

19. synthesis A chemical equation in the form of: A + B  AB, is an example of a ______ reaction..

20. decomposition A chemical equation in the form of: AB  A + B, is an example of a ________ reaction.

21. What technique would you use to find the volume of An irregularly shaped rock? Water displacement

22. What could you use to separate magnetic iron particles and non-magnetic sand? A magnet

23. 8 Oxygen’s atomic number is 8 and its mass is 16, how many protons does it have?