1. 2 nd 9 weeks – Review Part 2 Chapters 5-8

2. 2 nd 9 weeks – Review Part 2 What word best describes the type of materials that attract iron? A. Magnetic B. Chemical C. Mass D. Physical Answer = A, magnetic

3. 2 nd 9 weeks – Review Part 2 Which is an example of a chemical property? A. Color B. Mass C. Density D. Ability to burn Answer = D, ability to burn

4. 2 nd 9 weeks – Review Part 2 12. Which is an example of a physical change? A. Metal rusting B. Silver tarnishing C. Water boiling D. Paper burning Answer = C, water boiling

5. 2 nd 9 weeks – Review Part 2 What characteristic best describes what happens during a physical change? A. Composition changes B. Composition stays the same C. Form stays the same D. Mass is lost Answer = B, composition stays the same

6. 2 nd 9 weeks – Review Part 2 Which is an example of a chemical change? A. Water freezes B. Wood is carved C. Bread is toasted D. Wire is bent Answer = C, bread is toasted

7. 2 nd 9 weeks – Review Part 2 Which is NOT a clue that could indicate a chemical change? A. Change in color B. Change in shape C. Change in energy D. Change in odor Answer = B, change in shape

8. 2 nd 9 weeks – Review Part 2 What property stays the same during physical and chemical changes? A. Density B. Shape C. Mass D. Arrangement of particles Answer = C, mass

9. 2 nd 9 weeks – Review Part 2 What kind of change is taking place when you cut a piece of cake from the whole? Answer: physical change

10. 2 nd 9 weeks – Review Part 2 What kind of change is taking place when a candle is being burnt? Answer = a chemical change

11. 2 nd 9 weeks – Review Part 2 What could you do to an object to cause a chemical change? A. Cut it B. Paint it C. Throw it D. Burn it Answer = d, burn it

12. 2 nd 9 weeks – Review Part 2 Which of the following choices describes a physical change? A. Pouring an acid onto calcium carbonate B. Dropping an antacid tablet into water C. Heating water to its boiling point D. Pouring vinegar onto baking soda Answer = c, heating water to its boiling point

13. 2 nd 9 weeks – Review Part 2 Which of the following occurs as you heat a liquid to its boiling point? A. Condensation B. Melting C. Vaporization D. Freezing Answer = c, vaporization

14. 2 nd 9 weeks – Review Part 2 What property enables you to float a needle on water? A.Viscosity B.Temperature C.Surface tension D.Crystal structure Answer = C, surface tension

15. 2 nd 9 weeks – Review Part 2 In which case will an object float on a fluid? A.Buoyant force is greater than weight B.Buoyant force is less than weight C.Buoyant force equals weight D.Buoyant force equals zero Answer = A or C

16. 2 nd 9 weeks – Review Part 2 What is the process called when a gas cools to form a liquid? A.Condensation B.Sublimation C.Boiling D.Freezing Answer = A, condensation

17. 2 nd 9 weeks – Review Part 2 Force is measured by ____________. A.Pascals B.Newtons C.Kilopascals D.Meters Answer = B, Newtons

18. 2 nd 9 weeks – Review Part 2 The freezing point of a substance is _______ the melting point of the same substance. A.Greater than B.Less than C.Equal to D.Unrelated to Answer = C, equal to

19. 2 nd 9 weeks – Review Part 2 A cork is able to float on water because it is ___________. A.A crystalline solid B.Equal in density to water C.Small in size D.Less dense than water Answer = D, less dense than water

20. 2 nd 9 weeks – Review Part 2 What holds the nucleus of an atom together? Answer = The Strong Nuclear Force

21. 2 nd 9 weeks – Review Part 2 What two things are located in the nucleus of an atom? Answer = Positively charged protons and neutrally charged neutrons.

22. 2 nd 9 weeks – Review Part 2 What charge does an electron have? Answer = negative

23. 2 nd 9 weeks – Review Part 2 During beta-particle emission, a neutron splits into ____? A. A proton and an electron B. Two protons C. Two electrons D. Two neutrons Answer = a proton and an electron

24. 2 nd 9 weeks – Review Part 2 Who was the first person to propose what an atom was? Answer = Dalton

25. 2 nd 9 weeks – Review Part 2 Explain how Dalton thought an atom looked? Answer = Dalton thought that the atom was a solid sphere that was the same throughout

26. 2 nd 9 weeks – Review Part 2 How did Thomson think the atom looked? Answer = Thomson thought the atom was an even mixture of positive and negative charges and that it was neutral.

27. 2 nd 9 weeks – Review Part 2 What did Rutherford think about the atom? Answer = Rutherford realized that the atom had to have a nucleus. He thought that there was a tiny nucleus filled with positively charged protons and that negatively charged electrons surrounded the nucleus.

28. 2 nd 9 weeks – Review Part 2 What do we know about the model of the atom today? Answer = We now know that the atom has a nucleus filled with protons and neutrons and that electrons surround the nucleus.

29. 2 nd 9 weeks – Review Part 2 What is another name for the atomic number of an element? Answer = # of protons

30. 2 nd 9 weeks – Review Part 2 How is a period set up on the periodic table? Answer: rows/left to right/horizontally

31. 2 nd 9 weeks – Review Part 2 Where are the representative elements on the periodic table? Answer = Groups 1-2 and groups 13-18

32. 2 nd 9 weeks – Review Part 2 How is a group (or family) set up on the periodic table? Answer = up and down/vertically

33. 2 nd 9 weeks – Review Part 2 Where are the transition elements on the periodic table? Answer = groups 3-12

34. 2 nd 9 weeks – Review Part 2 Which element is NOT part of the iron triad? A. Nickel B. Copper C. Cobalt D. Iron Answer = B, copper

35. 2 nd 9 weeks – Review Part 2 Which statement about the periodic table is TRUE? A. Elements all occur naturally on Earth. B. Elements occur in the order in which they were discovered. C. Elements with similar properties occupy the same group. D. Element are arranged in the order Mendeleev chose. Answer = C, elements with similar properties occupy the same group.

36. 2 nd 9 weeks – Review Part 2 Which of the following statements about Iron is NOT correct? A. Iron is found in the hemoglobin of red blood cells B. Iron is a component of steel C. Iron is a member of the iron triad D. Iron is a metalloid Answer = d, iron is a metal not a metalloid

37. 2 nd 9 weeks – Review Part 2 Who created the first version of the periodic table – Moseley or Mendeleev? Answer = Mendeleev

38. 2 nd 9 weeks – Review Part 2 What is the name given to a row of elements in the periodic table whose densities and melting points change gradually and predictably? Answer = a period