Physical Science EOCT Practice Part II

1. Physical Science EOCT PracticePart II Milton High School

2. Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain? 1 2 3 4

3. Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain? 1 2 3 4

4. What phase change occurs when a solid changes directly into a gas? Freezing Melting Evaporation Sublimation

5. What phase change occurs when a solid changes directly into a gas? Freezing Melting Evaporation Sublimation

6. During the process of melting, what happens to the temperature of the substance? It stays constant It increases It decreases It increases and then decreases

7. During the process of melting, what happens to the temperature of the substance? It stays constant It increases It decreases It increases and then decreases

8. Ms. Coln dissolves an unknown substance in water. The solution is corrosive, conducts electricity, and has a higher concentration of H+ ions than OH- ions. What kind of solution does this unknown substance form? An acidic solution A basic solution A neutral solution A non-electrolyte solution

9. Ms. Coln dissolves an unknown substance in water. The solution is corrosive, conducts electricity, and has a higher concentration of H+ ions than OH- ions. What kind of solution does this unknown substance form? An acidic solution A basic solution A neutral solution A non-electrolyte solution

10. What happens to the solubility of a typical solute as temperature increases? The solubility decreases The solubility increases The solubility remains the same There is no way to know without knowing which exact solute

11. What happens to the solubility of a typical solute as temperature increases? The solubility decreases The solubility increases The solubility remains the same There is no way to know without knowing which exact solute

12. What is the coefficient on Hg when the following equation is balanced? HgO Hg + O2 1 2 3 4

13. What is the coefficient on Hg when the following equation is balanced? HgO Hg + O2 1 2 3 4

14. Which of the following BEST describes the difference between speed and velocity? Speed includes distance and direction while velocity includes only distance. Speed includes distance and direction while velocity includes only direction. Velocity includes distance and direction while speed includes only direction. Velocity includes distance and direction while speed only distance.

15. Which of the following BEST describes the difference between speed and velocity? Speed includes distance and direction while velocity includes only distance. Speed includes distance and direction while velocity includes only direction. Velocity includes distance and direction while speed includes only direction. Velocity includes distance and direction while speed only distance.

16. Mr. Lanham takes off in his boat from the dock and reaches a velocity of 6 meters per second after 3 seconds. What is the boat’s acceleration? 0.5 meters/second2 2 meters/second2 6 meters/second2 18 meters/second2

17. Mr. Lanham takes off in his boat from the dock and reaches a velocity of 6 meters per second after 3 seconds. What is the boat’s acceleration? 0.5 meters/second2 2 meters/second2 6 meters/second2 18 meters/second2

18. Inertia is the tendency of an object to continue its current state of motion. Which of the following BEST describes the relationship between inertia and mass? A greater mass means that something is easier to slow down or speed up. The amount of inertia of an object is equal to its mass. The greater the mass of an object, the greater the inertia it has. The greater the mass of an object , the less inertia it has.

19. Inertia is the tendency of an object to continue its current state of motion. Which of the following BEST describes the relationship between inertia and mass? A greater mass means that something is easier to slow down or speed up. The amount of inertia of an object is equal to its mass. The greater the mass of an object, the greater the inertia it has. The greater the mass of an object , the less inertia it has.

20. When Mrs. Pullano is standing at the front of the class teaching Chemistry, the force of gravity is pulling her down toward the ground. The ground is pushing back with an equal and opposite force. This is an example of Newton’s First Law of Motion Newton’s Second Law of Motion Newton’s Third Law of Motion The Law of Gravitation

21. When Mrs. Pullano is standing at the front of the class teaching Chemistry, the force of gravity is pulling her down toward the ground. The ground is pushing back with an equal and opposite force. This is an example of Newton’s First Law of Motion Newton’s Second Law of Motion Newton’s Third Law of Motion The Law of Gravitation

22. Joel drops a baseball from a window on the tenth floor of his apartment building. Each floor has a height of 12 feet. What is the baseball’s velocity after 2 seconds? 2.0 m/sec 9.8 m/sec 19.6 m/sec 24 m/sec J

23. Joel drops a hammer from a window on the tenth floor of his apartment building. Each floor has a height of 12 feet. What is the hammer’s velocity after 2 seconds? 2.0 m/sec 9.8 m/sec 19.6 m/sec 24 m/sec J

24. The mass of two objects is an important factor in determining the force of gravity between them. What is the second important factor? Their volume The distance between them Their diameters Their densities

25. The mass of two objects is an important factor in determining the force of gravity between them. What is the second important factor? Their volume The distance between them Their diameters Their densities

26. Which statement is correct? Weight is the amount of material in an object. Mass is the physical dimensions of an object. Weight is the gravitational pull on an object. Mass is the gravitational pull on an object.

27. Which statement is correct? Weight is the amount of material in an object. Mass is the physical dimensions of an object. Weight is the gravitational pull on an object. Mass is the gravitational pull on an object.

28. Mr. Sheridan entered his prize pumpkin in the State Fair. If the mass of the pumpkin is 1400 kg, what is its approximate weight? 14 g 1400 N 14000 N 6360 N

29. Mr. Sheridan entered his prize pumpkin in the State Fair. If the mass of the pumpkin is 1400 kg, what is its approximate weight? 14 g 1400 N 14000 N 6360 N

30. It takes 8 seconds for a pulley system to lift a load that weighs 400 N to a height of 10 m. How much power is required? 4000 watts 3200 watts 500 watts 80 watts

31. It takes 8 seconds for a pulley system to lift a load that weighs 400 N to a height of 10 m. How much power is required? 4000 watts 3200 watts 500 watts 80 watts

32. In order for a lever to multiply its effort force, Its effort force must equal its resistance arm Its resistance arm must be longer than its effort arm Its resistance arm should be one meter in length Its effort arm should be longer than its resistance arm

33. In order for a lever to multiply its effort force, Its effort force must equal its resistance arm Its resistance arm must be longer than its effort arm Its resistance arm should be one meter in length Its effort arm should be longer than its resistance arm

34. What is the definition of power? The ability to do work The rate of doing work The amount of work done Work output provided by work input

35. What is the definition of power? The ability to do work The rate of doing work The amount of work done Work output provided by work input

36. Newton’s first law of motion describes the tendency of objects in motion to continue in motion and objects at rest to remain at rest. What term is used to describe this behavior? Velocity Acceleration Displacement Inertia

37. Newton’s first law of motion describes the tendency of objects in motion to continue in motion and objects at rest to remain at rest. What term is used to describe this behavior? Velocity Acceleration Displacement Inertia

38. An acorn falls from an oak tree to the ground and hits a squirrel on the head. What is the acorn’s final velocity if it falls for 3 seconds? 9.8 m/sec 19.6 m/sec 29.4 m/sec 96.0 m/sec

39. An acorn falls from an oak tree to the ground and hits a squirrel on the head. What is the acorn’s final velocity if it falls for 3 seconds? 9.8 m/sec 19.6 m/sec 29.4 m/sec 96.0 m/sec

40. Materials that prevent heat flow are Usually metals Conductors Insulators Radiators

41. Materials that prevent heat flow are Usually metals Conductors Insulators Radiators

42. In which medium would a sound wave travel the fastest? Air Vacuum Water Steel

43. In which medium would a sound wave travel the fastest? Air Vacuum Water Steel

44. A balloon is rubbed all over with wool. The balloon will now attract the water because The balloon and the water are magnets The balloon and the water have opposite charges The balloon and the water have like charges The balloon and the water are neutral

45. A balloon is rubbed all over with wool. The balloon will now attract the water because The balloon and the water are magnets The balloon and the water have opposite charges The balloon and the water have like charges The balloon and the water are neutral

46. If a simple circuit has one resistor of 3 ohms and a current of 3 amps, how many volts is the power source? 3 volts 6 volts 9 volts 19 volts

47. If a simple circuit has one resistor of 3 ohms and a current of 3 amps, how many volts is the power source? 3 volts 6 volts 9 volts 19 volts

48. Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1.5 amps. What is the resistance of the heating element? 40 ohms 60 ohms 90 ohms 120 ohms

49. Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1.5 amps. What is the resistance of the heating element? 40 ohms 60 ohms 90 ohms 120 ohms

50. Sally is making a solution of kool-aid by dissolving a package of cherry powdered kool-aid mix in a pitcher of water. What is the solvent in this solution? Cherry flavored kool-aid powder mix The water Cherries The spoon used to stir the solution