1. 1 st Six Weeks Review Chemistry

2. 1. What are the 4 parts of Dalton’s Atomic Theory? Atoms Yo

3. Electron picture 2. Describe J.J. Thompson’s contribution to atomic theory and find a picture to illustrate it.

4. 3. Describe Ernest Rutherford’s contribution to atomic theory and find a picture to illustrate it.

5. 4. Describe Niels Bohr’s contribution to atomic theory and find a picture to illustrate it.

6. 5. Describe Eugene Goldstein’s contribution to atomic theory find a picture to illustrate it.

7. Answer 6. Describe James Chadwick’s contribution to atomic theory find a picture to illustrate it.

8. 7. Describe Erwin Schrodinger contribution to atomic theory find a picture to illustrate it.

9. 8. Find a picture & 3 statements that describe a proton.

10. 9. Find a picture & 3 statements that describe a neutron.

11. 10. Find a picture & 3 statements that describe an electron.

12. 11. True or False: The nucleus contains most of the atom’s volume.

13. 12. Illustrate an element square from the periodic table & label the information it provides.

14. 13. True or False: Most of the volume of an atom is occupied by the electron cloud.

15. 14. A neutral carbon has how many protons, neutrons & electrons? Protons = Neutrons = Electrons =

16. 15. Magnesium is classified which of the following: solution, alloy, mixture or pure substance?

17. 16. What is an isotope?

18. 17. What are the three isotopes of hydrogen? How many protons, neutrons & electrons does each one have?

19. 18. For the isotope Nitrogen-15, how many subatomic particles are present? (protons, neutrons, & electrons)

20. 19. Potassium has an atomic number 19 and an atomic mass of 39. How many protons, neutrons and electrons does it have?

21. 20. What is average atomic mass? How do you calculate it?

22. 21. What is the average atomic mass of silver? Isotope Name Isotope Mass (amu) Percentage Silver-107106.9050951.86 Silver-109108.9047048.14 Extra Practice: http://www.algebralab.org/practice/practice.aspx?fil e=algebra_averageatomicmass.xml http://www.algebralab.org/practice/practice.aspx?fil e=algebra_averageatomicmass.xml

23. 22. Classify each of the following as an element, compound or mixture: Sulfur - Salad oil - Newspaper - Orange - MgCl 2 - Cardboard - Apple juice -

24. 23. What is density and how do you calculate it?

25. 24. Visit the following site: http://www.explorelearning.com/ http://www.explorelearning.com/ Type “Density” in the Search Bar. Click on “Density Laboratory.” Click on “Gizmo” above the picture. Move objects onto the scale & into the cylinder & calculate the density to predict if the object will sink or float.

26. 25. Give 4 examples and a picture of physical changes.

27. 26. Give 4 examples and a picture of chemical changes.

28. Draw lines to match the following: 1. Electrona. neutral particle w/mass of 1.67 x 10 -24 g 2. Protonb. – particle w/ mass of 9.11 x 10 -28 g 3. Neutronc. + particle w/ mass of 1.67 x 10 -24 g 4. Heterogeneousd. sample with uniform & definite composition 5. Homogeneouse. physical blend of 2 or more substances 6. Mixturef. uniform mixture 7. Elementg. substance that can be chemically separated 8. Compoundh. simplest form of a substance 9. Pure substancei. mixture that is not uniform throughout