1. 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 ptJust A Couple More Days UntilEOCT!

2. A toaster is plugged into a wall outlet that has a voltage of 110 volts. If the toaster’s resistance is 10 ohms. What current runs through the toaster?

3. What is 11 amperes?

4. Use the table to answer the following question: SaltFlame Color sodium chlorideyellow potassium chlorideviolet copper chlorideblue calcium chloridered A flame test is performed on a small amount of unknown substance burned blue. The substance is most likely …

5. What is copper?

6. Which of the following is a chemical property of iodine? Violet as a gasViolet as a gas Silver and black as a solidSilver and black as a solid Reacts with starch to give a dark blue colorReacts with starch to give a dark blue color A solid at room temperatureA solid at room temperature

7. What is reacts with starch to give a dark blue color?

8. An ionic bond typically forms between certain types of elements. Which pair of elements will form an ionic compound? Na and CuNa and Cu K and ClK and Cl Ne and ONe and O Li and MgLi and Mg

9. What is K and Cl (potassium and chlorine)?

10. The number of protons in a neutral atom is equal to the number of ….

11. What is electrons?

12. Albert stirs a mug of hot chocolate with a metal spoon. What type of heat transfer is responsible for the spoon getting hot?

13. What is conduction?

14. In order to determine the speed of an object, what measurements must be made?

15. What are distance and time?

16. A student connects three identical light bulbs in parallel to a dry cell. This will happens when the student removes one of the bulbs from its socket… All the lights will go outAll the lights will go out The other light bulbs will remain on and will be equally brightThe other light bulbs will remain on and will be equally bright The other light bulbs remain on, one less bright and the other the same brightnessThe other light bulbs remain on, one less bright and the other the same brightness The other light bulbs remain on, one brighter and the other less than beforeThe other light bulbs remain on, one brighter and the other less than before

17. That is the other bulbs will remain on and will be equally bright?

18. The height, length and width of a block are all different. Using this block, a student wants to test a hypothesis that frictional forces are independent of the area of contact between the block and the surface it slides on. Which method is the best to collect the data needed? Pulling the block 10 times across the same surface adding weight each timePulling the block 10 times across the same surface adding weight each time Pulling the block across 10 different surfaces with the largest side in contactPulling the block across 10 different surfaces with the largest side in contact Pulling the block across the same surface with a different side in contact each timePulling the block across the same surface with a different side in contact each time Pulling the block across three different surfaces with a different side on contact each timePulling the block across three different surfaces with a different side on contact each time

19. What is pulling the block across the same surface with a different side on contact each time?

20. The melting of wax is a physical change, yet the burning of wax is a chemical change. What is the essential difference between the physical change and chemical change of wax in a burning candle? The burning wax forms new compounds, while the melting wax does notThe burning wax forms new compounds, while the melting wax does not A higher temperature is needed to burn wax rather than melt waxA higher temperature is needed to burn wax rather than melt wax Melted wax can be separated into other components while solid wax can notMelted wax can be separated into other components while solid wax can not Melted wax is a different phase than solid waxMelted wax is a different phase than solid wax

21. What is the burning of wax forms new compounds, while the melting of wax does not.

22. An aluminum bar was found to have a mass of 27 g. Using water displacement, the volume was measured to be 10 mL. The density of the aluminum is …

23. What is 2.7 g/mL?

24. What is the correct formula for the compound formed when calcium and oxygen combine?

25. What is CaO?

26. Radioisotopes are commonly used as which of the following… Cooling agentsCooling agents Agriculture pesticidesAgriculture pesticides Nutritional supplementsNutritional supplements Traces in biochemical reactionsTraces in biochemical reactions

27. What is traces in biochemical reactions?

28. An airplane in level flight is acted on by 4 basic forces. Drag is air resistance, lift is the upward force, thrust is from the engines, weight is the force of gravity. In level flight at constant speed, which pair of forces must be equal? lift Weight drag thrust

29. What are lift and weight?

30. A piece of blue paper appears blue because the paper… Reflects all colors of light except blueReflects all colors of light except blue Refracts all colors of light except blueRefracts all colors of light except blue Absorbs all colors of light except blueAbsorbs all colors of light except blue Is transparent to all colors of light except blueIs transparent to all colors of light except blue

31. What is absorbs all colors of light except blue?

32. Which one of these energy sources is a nonrenewable energy source? SolarSolar WaterWater WindWind Natural gasNatural gas

33. What is natural gas?

34. Which of the following is most likely to contains information on a new scientific discovery? TextbookTextbook Current scientific magazineCurrent scientific magazine EncyclopediaEncyclopedia Reference book on a scientific dataReference book on a scientific data

35. What is a current scientific magazine?

36. In normal air, which of the following substances is MOST common? NitrogenNitrogen OxygenOxygen Carbon dioxideCarbon dioxide Carbon monoxideCarbon monoxide

37. What is nitrogen?

38. The equation balanced below is… 2Na+O 2  2Na 2 O2Na+O 2  2Na 2 O Sn + 2KOH  K 2 SnO 2 + 2H 2Sn + 2KOH  K 2 SnO 2 + 2H 2 AsCl 3 + 3H 2 O  3HCl + As(OH) 3AsCl 3 + 3H 2 O  3HCl + As(OH) 3 H 2 + O 2  H 2 OH 2 + O 2  H 2 O

39. What is AsCl 3 + 3H 2 O  3HCl + As(OH) 3 ?

40. The stored energy in a battery can BEST be described as…

41. What is chemical energy?

42. To operate an electric train set, a transformer must reduce 120 volts house current to 6 volts. What is the ratio between turns on the primary (120 volts) side and the secondary (6 volt) side? 10:110:1 20:120:1 1:101:10 1:201:20

43. What is 20:1?

44. Mike wants to determine the weight of some small stones. He places each of them on a scale that measures the mass of each stone. Mike’s final results should be reported in which of the following units… Grams/cm3Grams/cm3 KilogramsKilograms LitersLiters NewtonsNewtons

45. What is Newton’s?

46. Of the following which pair is MOST similar… Ca & FCa & F Na & ClNa & Cl Ne & ArNe & Ar Li & HLi & H

47. What is Ne & Ar? They are both Nobel Gases!

48. In an atom which force hold the protons and neutrons together in the nucleus? GravityGravity Electromagnetic forceElectromagnetic force Strong forceStrong force Weak forceWeak force

49. What is the strong force?

50. Janelle is starting a research project on transistors. She goes to a Web site that has links organized by topic. In which of the following topics should Janelle begin her search? AstronomyAstronomy BiologyBiology Earth ScienceEarth Science PhysicsPhysics

51. What is Earth Science?