Some Chemistry and a few Physics Practice Questions for the GHSGT

1. Some Chemistry and a few Physics Practice Questions for the GHSGT PICK UP A REMOTE… PLEASE DO NOT TURN THEM ON NOR ENTER ANY NUMBERS UNTIL YOU ARE INSTRUCTED TO DO SO!

2. What is the final step in the scientific method? iRespond Question Multiple Choice F A.) identify the problem B.) restate the hypothesis C.) draw conclusion D.) develop a theory E.)

3. “Be sure to wear eye protection at all times in the lab” is known as a(n) iRespond Question Multiple Choice F A.) safety procedure B.) step in the scientific method C.) observation D.) laboratory theory E.)

4. In science, what steps are followed to solve a problem? iRespond Question Multiple Choice F A.) laboratory rules B.) deductive reasoning C.) data analysis D.) the scientific method E.)

5. Which of the following is not a part of laboratory research? iRespond Question Multiple Choice F A.) conduct meaningful research B.) become aware of surroundings C.) compile data collected D.) gather information through observation and experiments E.)

6. The earth’s crust is composed of about 49% oxygen, 26% silicon, 7% aluminum, 5% iron, 3% calcium, 3% sodium, 3% potassium, and 4% other substances. Which would be the best way to present this information? iRespond Question Multiple Choice F A.) line graph B.) pie graph C.) dot graph D.) bar graph E.)

7. Instant coffee crystals are prepared for breakfast by stirring them into boiling water. Water is the? iRespond Question Multiple Choice F A.) solute B.) solvent C.) compounding agent D.) heterogeneous agent E.)

8. How is a mixture different from a compound? iRespond Question Multiple Choice F A.) a mixture can be separated into its parts through physical action, but a compound can only be separated into its parts by chemical reaction B.) a mixture can contain many elements, but a compound can contain only two elements C.) a mixture can be always be separated into its parts with a magnet, but heat must be applied before a compound can be separated D.) a mixture is a man-made substance, while a compound is a naturally occurring substance E.)

9. You would like to conduct an experiment to test a variety of liquids to see if they are acidic. What supplies will you need? iRespond Question Multiple Choice F A.) filter paper, beaker B.) eudiometer, beaker, clamp C.) litmus paper, stirring rod D.) buret, Erlenmeyer flask, clamp E.)

10. What part of a science textbook lists the page number where a chapter on weather begins? iRespond Question Multiple Choice F A.) appendix B.) glossary C.) preface D.) table of contents E.)

11. iRespond Question Multiple Choice F 10. You have been collecting data to determine average monthly rainfall for a particular year. You have 25 random samples recorded in milliliters for each month. You want to show rainfall trends over the year. What would be the best way to represent your data to illustrate each month’s average rainfall? A.) On a calendar, with the samples written on the days they were taken. B.) On a bar graph, with each bar representing the average of 25 samples for a particular month. C.) In a brief but descriptive paragraph that includes your methods and general findings. D.) On a data table, with the months labeled along the top and 25 samples written below each, averaged at the last row. E.)

12. #11. Dr. Chase wants to write an analysis of several pieces of literature she reviewed pertaining to heart disease. What will Dr. Chase be attempting to do in her analysis? iRespond Question Multiple Choice F A.) Dr. Chase will make a judgment on the literature based on her own professional opinion. B.) Dr. Chase will review the literature according to the criteria set forth in the literature itself. C.) Dr. Chase will record observations of heart disease under carefully controlled conditions. D.) Dr. Chase will ignore the degree of closeness between the measured values and the true values of statistics in her literature review. E.)

13. #12. Which of the following is the purpose of an experimental group? iRespond Question Multiple Choice F A.) Experimental groups are groups designed with variable conditions to test the hypothesis. B.) An experimental group is a process designed to yield observations under carefully controlled conditions. C.) An experimental group is a judgement or decision based on experimentation. D.) Experimental groups are the results of an investigation or experiment. E.)

14. #13. How should a meniscus be read in a graduated cylinder filled with water? iRespond Question Multiple Choice F A.) The meniscus should be read with a magnifying glass. B.) The meniscus should be read from the top of the curve. C.) The meniscus should be read from left to right. D.) The meniscus should be read from the bottom of the curve. E.)

15. #14. What is the correct conversion of 5.32m to km? iRespond Question Multiple Choice F A.) 0.0532 km B.) 5320 km C.) 0.00532 km D.) 532 km E.)

16. #15. A= l x w. A=area, l=length, and w=width. What is the area of a building that is 50 m long and 20 m wide? iRespond Question Multiple Choice F A.) 2.50 m2 B.) 1000 m2 C.) 70 m2 D.) 100 m2 E.)

17. #16. V= l x w x h. V=volume, l=length, w=width, h=height. 1 cm3=1 mL. What is the liquid volume in milliliters of a cube that is 3.0 cm long, 4.0 cm wide, and 6.0 cm high? iRespond Question Multiple Choice F A.) 13 mL B.) 62 mL C.) 72 mL D.) 2.0 mL E.)

18. #17. A beaker is filled with 20 mL of water. A rock is dropped in the beaker, raising the water level to 37mL. What is the volume of the rock? iRespond Question Multiple Choice F A.) 57 mL B.) 1.85 mL C.) 740 mL D.) 17 mL E.)

19. #18. D= m/v. D=density, m=mass, and v=volume. A piece of coal has a mass of 46 grams and a volume of 28 mL. What is the density of the coal? iRespond Question Multiple Choice F A.) 18 g/mL B.) 1300 g/mL C.) 1.6 g/mL D.) 0.61 g/mL E.)

20. #19. Air has the same concentration of oxygen throughout a room. This is an example of a(n)_____. iRespond Question Multiple Choice F A.) Element. B.) Pure substance. C.) Compound D.) Solution. E.)

21. #20. Why is chemistry considered a physical science? iRespond Question Multiple Choice F A.) Physical science is a study of motion, chemistry is the study of moving galaxies in space B.) Physical science is the study of matter and energy, chemistry is the study of plant and animal energy C.) Physical science is study of life, chemistry focuses on the study of living matter D.) Physical science is the study of matter and energy, chemistry focuses on the study of matter and changes in matter E.)

22. 21. As a car battery is used, the terminals exposed to air start to corrode. Corrosion is an example of a(n) __________ change. iRespond Question Multiple Choice F A.) chemical B.) biological C.) physical D.) electrical E.)

23. 22. Nickels, dimes, and quarters are in a piggy bank. This is an example of a __________ mixture. iRespond Question Multiple Choice F A.) homogeneous B.) chemical C.) saturated D.) heterogeneous E.)

24. 23. Pewter, an alloy made of 90% tin, 7% antimony, and 3% copper is known as a iRespond Question Multiple Choice F A.) liquid solution B.) heterogeneous mixture C.) solid solution D.) liquid mixture E.)

25. 24. The nucleus of an atom contains: iRespond Question Multiple Choice F A.) DNA B.) protons and electrons C.) neutrons only D.) protons and neutrons E.)

26. 25. If a 0.1M acidic solution of basic solution of 0.1M are combined in equal amounts, what will be the action and result of the combination? iRespond Question Multiple Choice F A.) Action:neutralization, Outcome: water B.) Action:chemical reaction, Outcome: O2 and CO2 C.) Action:dissociation, Outcome: stronger acids and bases D.) Action:titration, Outcome: change in the color of the combined solution E.)

27. The atomic number for radon is 86, and the atomic mass is 222. How many neutrons does radon have? iRespond Question Multiple Choice F A.) 2.58 B.) 43 C.) 136 D.) 308 E.)

28. 27. Which of the following is an element? iRespond Question Multiple Choice F A.) water B.) gold (24K) C.) sugar D.) aluminum oxide E.)

29. 28. How many valence electrons make most atoms stable? iRespond Question Multiple Choice F A.) 2 B.) 8 C.) 13 D.) 25 E.)

30. 29. In CO2, the subscript 2 represents the number of iRespond Question Multiple Choice F A.) electrons B.) carbon dioxide molecules C.) carbon atoms D.) oxygen atoms E.)

31. #30. Which qualities correctly distinguish metal from nonmetals? iRespond Question Multiple Choice F A.) Nonmetals conduct heat better and a higher luster than metals. B.) Metals often contain more than four electrons in their outer shell. Nonmetals have one to three electrons in their outer shell. C.) Metals conduct heat better and have a higher luster than nonmetals. D.) Nonmetals are all gases while metals are all solids. E.)

32. 31. Why is the atomic mass of an element greater than the atomic number? iRespond Question Multiple Choice F A.) The atomic mass includes both protons and neutrons. The atomic number contains the protons only. B.) The atomic mass includes both neutrons and electrons. The atomic number counts only the electrons. C.) The atomic number counts the number of photons. The atomic mass counts the number of photons and atoms. D.) The atomic number counts the number of ions. The atomic mass counts the number of ions and isotopes. E.)

33. 32. Use Ohm’s law V=IR, where V=voltage, I=current and R=resistance, to determine the resistance of the load in the following circuit. V=3 and I =1 iRespond Question Multiple Choice F A.) 0.3 ohms B.) 0.8 ohms C.) 3 ohms D.) 3R E.)

34. 33. In electric circuits, what type is present in most homes? iRespond Question Multiple Choice F A.) Parallel B.) Series C.) DC D.) Static E.)

35. 35. A good way to generate static electricity is to: iRespond Question Multiple Choice F A.) rub a rubber rod with wool B.) rub a wire on a magnet C.) turn a magnet in a coil of wire D.) rub two pieces of wool together E.)

36. 35. Technically, noise is defined as: iRespond Question Multiple Choice F A.) any loud sound B.) irregular vibrations at irregular intervals C.) a compressional wavelength with a large amplitude D.) any sound that falls between the range of 100 to 1,000 decibels E.)

37. 36. Which characteristic is associated with alpha radiation? iRespond Question Multiple Choice F A.) the ability to gain or lose an electron B.) the capability of penetrating 5 inches of lead shielding C.) low energy helium nuclei D.) the ability to produce X-rays E.)

38. 37. Radioactive materials (such as uranium and plutonium) have been linked with cancer and genetic defects, both of which are known to be caused by changes within the cell. How does radioactivity affect living cells? iRespond Question Multiple Choice F A.) Radio-length waves emitted from radioactive elements constantly bombard the cell, causing changes B.) Uranium and plutonium replace normal elements in certain proteins, either causing birth defects or initiating cancer C.) Alpha, beta, or gamma radiation can change the molecular composition of a chromosome or other cell structure, thus causing the cell to change E.)

39. 38. Which would be the best example of kinetic energy? iRespond Question Multiple Choice F A.) batteries on a shelf B.) batteries in a flashlight that is turned off C.) batteries rolling off of a desk D.) batteries in a flashlight that is turned on E.)

40. 39. Bob picked up two eggs from the table. One slipped out of his hand as he picked it up and hit the table but did not break. The egg then rolled off the table and fell on the floor, where it broke. Which principle of physical science best explains why the egg broke on the floor but not on the table? iRespond Question Multiple Choice F A.) The floor was harder than the table. B.) The first fall cracked the egg so that it would break the next time it hit something C.) As the egg fell to the floor, it encountered friction with the air which made it easier to break D.) The egg that hit the floor had more kinetic energy available to do work on the egg. E.)

41. 40. Convection is defined as a type of heat transfer in which iRespond Question Multiple Choice F A.) heat is transferred by the movement of a fluid. B.) a liquid acquires enough heat to change to a gas. C.) temperature changes are measured only in Kelvin degrees. D.) thermal energy is transferred by the direct contact of one molecule to another. E.)