Chemistry Spring Packet-1 --- Study Guide for Benchmark Exam 1. Which action will result in a new product with new chemical properties? A. shredding a newspaper B. cutting wood C. breaking a mirror D. popping popcorn 5. Which diagram represents an electrically neutral atom? 2. This is a ph chart of common materials. A. Which substance is the most basic? A. Cola B. Cheese C. Baking Soda D. Bleach 3. Which diagram represents the change of ice to water? B. A. B. C. C. D. 4. This chart represents the melting points and boiling points for four substances. D. 6. Which statement best describes the part of the atom that is shown by the arrow? Which substance is a solid at -200 o C? A. chlorine B. nitrogen C. oxygen D. hydrogen A. It is an electron, and it has a negative charge. B. It is an electron, and it has a positive charge. C. It is a proton, and it has a negative charge. D. It is a proton, and it has a positive charge.
Chemistry Spring Packet-1 --- Study Guide for Benchmark Exam 7. Why is KOH considered to be a base? A. It produces OH+ ions in solution. B. It produces H+ ions in solution. C. It produces H- ions in solution. D. It produces OH- ions in solution. 13. Magnesium (Mg) and fluorine (F) are chemically combined. Based on the periodic table, which statement describes the interaction of these two elements? 8. Common soaps are often basic. Which of these is a property of a chemical base? A. sour taste B. ph equal to 6 C. turns litmus paper blue D. forms bubbles with limestone 9. All of the following samples of matter are correctly identified EXCEPT. A. oxygen gas - homogeneous mixture B. chocolate chip ice cream - heterogeneous mixture C. aluminum foil - homogeneous mixture D. sugar solution - heterogeneous mixture 10. Which answer choice best identifies the sample of matter in the diagram below? A. Mg is a metal and F is a nonmetal that forms an ionic bond. B. Mg is a nonmetal and F is a metal that forms an ionic bond. C. Mg is a metal and F is a metal that forms a covalent bond. D. Mg is a metalloid and F is a nonmetal that forms a covalent bond. 14. The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models of a chemical reaction best represents the law of conservation of mass? A. A. suspension B. compound C. element D. colloid 11. Which of the following has six valence electrons? A. magnesium (Mg) B. silicon (Si) C. sulfur (S) D. argon (Ar) 12. Barium (Ba) and iodine (I) combine to form an ionic compound. What is the chemical formula for this compound? A. BaI B. BaI 2 C. Ba 2I D. Ba 2I 2 B. C. D. 15. A balanced chemical equation reflects the idea that the mass of the products. A. is greater than the mass of the reactants B. is less than the mass of the reactants C. equals the mass of the reactants D. is not related to the mass of the reactants 16. What type of elements are found along the bold line on the periodic table below? 22. A balanced equation is shown below. C 6H 12O 6 2C 2H 5OH + 2CO 2
Chemistry Spring Packet-1 --- Study Guide for Benchmark Exam Which of the following statements correctly compares the mass of the reactant with the mass of the products in this equation? A. The mass of the reactant is half the mass of the products. B. The mass of the reactant is twice the mass of the products. C. The mass of the reactant is one-fourth the mass of the products. D. The mass of the reactant is the same as the mass of the products. A. metal B. nonmetal C. metalloid D. compound 17. Which of the following lists three states of water in order of increasing kinetic energy? A. ice, vapor, liquid B. liquid, ice, vapor C. vapor, liquid, ice D. ice, liquid, vapor 18. Which of the following is an example of a physical change? A. lighting a match B. burning wood C. breaking a glass D. rusting of iron 19. Iodine would have chemical properties most like. A. manganese (Mn) B. tellurium (Te) C. chlorine (Cl) D. xenon (Xe) 20. Which elements are in the same period? A. lead and sodium B. oxygen and helium C. silver and tin D. tin and lead 23. How does the kinetic energy of the particles of a solid compare to the kinetic energy of the particles of a gas? A. particles of a solid have greater kinetic energy than particles of a gas B. particles of a solid have less kinetic energy than particles of a gas C. particles of a solid have the same kinetic energy as particles of a gas D. particles of a solid do not have kinetic energy and particles of a gas do 24. How can two different nonmetals form a compound? A. by sharing protons B. by sharing electrons C. by gaining or losing protons D. by gaining or losing electrons 25. Which of the compounds listed below will most likely be formed when lithium (Li) and nitrogen (N) are chemically combined? A. LiN B. Li 3N C. LiN 3 D. Li 3N 3 26. Which element is least likely to react with other elements? A. helium B. iodine C. phosphorus D. sulfur 27. According to the periodic table, which two elements would have the most similar reactivity? A. two from the same row B. two from the same column C. two that are in neighboring columns D. two that are side by side on the periodic table 21. Which of the following chemical equations is balanced correctly? A. C 6H 6 + O 2 2CO 2 + 3H 2O B. CS 2 + 3Cl 2 CCl 4 + S 2Cl 2 C. B 2O 3 + 2C B 4C + CO D. Cl 2 + NaI 2NaCl + I 2 28. The graph shows a solubility curve for several
Chemistry Spring Packet-1 --- Study Guide for Benchmark Exam compounds. Which substance has a solubility of 50g per 100g of water at 46 C? A. HCl B. KClO 3 C. KNO 3 D. NH 4Cl 29. Which compound contains ionic bonds? A. KCl B. SCl 2 C. PCl 3 D. CCl 4 30. Which is the chemical formula for nitrogen monoxide? A. NO B. N 2O C. NO 2 D. N 2O 4 31. Which of these elements is a metalloid? A. cobalt B. fluorine C. lithium D. silicon 32. Which type of chemical bond forms when electrons are transferred from one atom to another? A. compound B. covalent C. ionic D. metallic
Chemistry Spring Packet-1 --- Study Guide for Benchmark Exam # Answer Standard # Answer Standard 1 D 2.1.3 21 B 2.2.4 2 D 2.2.6 22 D 2.2.4 3 A 2.1.2 23 B 2.1.2 4 A 2.1.3 24 B 2.2.2 5 D 2.1.4 25 B 2.2.3 6 A 2.1.4 26 A 2.1.4 7 D 2.2.6 27 B 2.2.1 8 C 2.2.6 28 D 2.1.3 9 D 2.1.1 29 A 2.2.2 10 B 2.1.1 30 A 2.2.3 11 C 2.1.4 31 D 2.1.1 12 B 2.2.3 32 C 2.2.2 13 A 2.2.2 14 A 2.2.4 15 C 2.2.4 16 C 2.1.1 17 D 2.1.2 18 C 2.1.3 19 C 2.2.1 20 C 2.2.1
Chemistry Spring Packet-2 --- Study Guide for Benchmark Exam 1. The following equations represent chemical reactions. 6. What is the atomic number for silicon? Which equation shows that the total mass during a chemical reaction stays the same? A. 1 B. 2 C. 3 D. 4 A. 14 B. 14.1 C. 28.1 D. 42.2 7. Consider this phase diagram. 2. A balanced chemical equation reflects the idea that the mass of the products. A. is greater than the mass of the reactants B. is less than the mass of the reactants C. equals the mass of the reactants D. is not related to the mass of the reactants 3. Copper in the compound CuSO 4 can be isolated in the following reaction with iron. Fe + CuSO 4 FeSO 4 + Cu What type of reaction is shown above? A. decomposition B. synthesis C. single displacement D. double displacement 4. Which of the following two elements will form a covalent bond? A. C and O B. Na and Cl C. Ba and F D. Mg and Cl What process is occurring when a substance changes from point Y to point X? A. boiling B. freezing C. melting D. sublimation 5. Which of the following is classified as a substance and NOT a mixture? A. soil B. carbon dioxide C. seawater D. blood
Chemistry Spring Packet-2 --- Study Guide for Benchmark Exam 8. Suppose scientists discovered four new elements (W, X, Y, Z) while studying rock and soil samples brought back from a Mars mission. Which Lewis dot structure represents an element that should be placed in column VIIA (17) of the periodic table? A. 12. A 2-cm-thick piece of cardboard placed over a radiation source would be most effective in protecting against which type of radiation? A. alpha B. beta C. gamma D. x-ray 13. In the figure below, what type of nuclear activity is represented? B. C. D. 9. The water from hot springs near the Ebeko volcano in the Pacific Ocean has a very low ph. A low ph indicates which of the following about the water? A. It has no detectable H+ or OH- ions. B. It has equal concentrations of H+ and OHions. C. It has high concentrations of H+ ions. D. It has equal numbers of positive and negative ions. 10. A student was assigned to take water samples from a lake near his home. He measured the ph of one of the water samples to be 6.0. Which of the following best describes this sample of water? A. highly acidic B. slightly acidic C. highly basic D. slightly basic 11. Common soaps are often basic. Which of these is a property of a chemical base? A. sour taste B. ph equal to 6 C. turns litmus paper blue D. forms bubbles with limestone A. fission B. fusion C. alpha emission D. beta emission 14. Which of the following statements describes a gamma ray? A. A gamma ray has no mass. B. A gamma ray has a positive charge. C. A gamma ray can be stopped by a sheet of paper. D. A gamma ray can be converted into a beta particle. 15. A rock sample contains 80 g of a potassium-40 isotope with a half-life of 1.25 billion years. How much of the potassium-40 isotope will remain after 2.5 billion years have passed? A. 0 g B. 10 g C. 20 g D. 80 g 16. Which of the following represents a double displacement reaction? A. ABC AB + C B. A + B AB C. AB + CD AD + CB D. A + BC AC + B
Chemistry Spring Packet-2 --- Study Guide for Benchmark Exam 17. Which substance would most neutralize an acidic food? A. dairy (ph 5-7) B. water (ph 6-7) C. citrus fruit (ph 2-3) D. baking soda (ph 8-9) 18. The ph of four different solutions of common materials is measured. Which of the following lists the solutions in order from most acidic to most basic? A. battery acid, lemon juice, blood, laundry detergent B. lemon juice, battery acid, blood, laundry detergent C. laundry detergent, blood, lemon juice, battery acid D. battery acid, blood, laundry detergent, lemon juice 19. This equation represents a balance neutralization chemical equation: LiOH + HF LiF + H 2O A solution of which compound has a ph less than 7? A. H 2O, because it is neutral. B. HF, because it is an acid. C. LiF, because it is a salt. D. LiOH, because it is a base. 20. Which equation represents a neutralization (acid-base) reaction? A. 4Fe + 3O 2 2Fe 2O 3 B. CaCO 3 CaO + CO 2 C. NaOH + HCl NaCl + H 2O D. Mg + 2HCl MgCl 2 + H 2 21. Use the sequence of pictures to answer the question. At what step in the fission process is a massive amount of energy released? A. 1 B. 2 C. 3 D. 4 22. Radium, a radioactive element, decays over time. How much would remain of 20 grams of radium after two half-lives have passed? A. 0 grams B. 5 grams C. 7 grams D. 10 grams 23. In which group are the particles arranged in order of decreasing mass? A. alpha, beta, neutron B. alpha, neutron, beta C. neutron, beta, alpha D. neutron, alpha, beta 24. Which is responsible for producing heat and light from the sun? A. nuclear energy B. chemical energy C. electrical energy D. wind energy 25. A 100-gram sample of radium-226 has a half-life of 1,600 years. How long will it take before there are only 12.5 grams of the radioactive radium-226 remaining? A. 1,600 years B. 3,200 years C. 4,800 years D. 6,400 years 26. Each circle shown below represents a different atom. 29. The table below shows the ph and reaction to litmus of four body fluids.
Chemistry Spring Packet-2 --- Study Guide for Benchmark Exam Which diagram illustrates that matter is always conserved during a chemical reaction? A. B. C. D. 27. Consider this reaction: NH 3 + HCl NH 4Cl Which type of reaction does this equation represent? A. combustion B. decomposition C. single replacement D. synthesis These data indicate that gastric juice is. A. very acidic B. very basic C. positively charged D. negatively charged 30. Of four different laboratory solutions, the solution with the highest acidity has a ph of. A. 11 B. 7 C. 5 D. 3 31. Which of the following is an observable property of many acids? A. They become slippery when reacting with water. B. They react with metals to release hydrogen gas. C. They produce salts when mixed with other acids. D. They become more acidic when mixed with a base. 32. What substances are produced during a neutralization reaction of an acid and a base? A. a new acid B. a base and water C. a salt and water D. an acid and a salt 28. Which characteristic does an acid have? A. It feels slippery or soapy. B. It does not react with metals. C. It donates the hydroxide ion in solution. D. It has a ph that is less than 7.
Chemistry Spring Packet-2 --- Study Guide for Benchmark Exam # Answer Standard # Answer Standard 1 C 2.2.4 27 D 2.2.5 2 C 2.2.4 28 D 2.2.6 3 C 2.2.5 29 A 2.2.6 4 A 2.2.2 30 D 2.2.6 5 B 2.1.1 31 B 2.2.6 6 A 2.1.4 32 C 2.2.6 7 B 2.1.3 8 A 2.1.4 9 C 2.2.6 10 B 2.2.6 11 C 2.2.6 12 A 2.3.1 13 A 2.3.1 14 A 2.3.1 15 C 2.3.2 16 C 2.2.5 17 D 2.2.6 18 A 2.2.6 19 B 2.2.6 20 C 2.2.6 21 D 2.3.1 22 B 2.3.2 23 B 2.3.1 24 A 2.3.1 25 C 2.3.2 26 A 2.2.4