Chemistry Practice Unit Test PDF

Chemistry UNIT TEST Version 1 __________________________ Use the following information to answer question 1. Bitumen is similar to conventional oil as they are both hydrocarbons. However, bitumen d...

Chemistry UNIT TEST Version 1 __________________________ Use the following information to answer question 1. Bitumen is similar to conventional oil as they are both hydrocarbons. However, bitumen does not flow as freely as oil and it is quite thick like molasses. Aboriginal people used the tarry bitumen combined with spruce gum to waterproof their canoes. 1. Which basic need was best met by the use of bitumen in canoe waterproofing? A. Allowed greater trading to obtain more clothes. B. Provided better access for fishing and hunting. C. Provided a waterproof shelter. D. Allowed access to larger lakes. Science 10  Chemistry UNIT TEST Use the following information to answer numerical response question 1. Four Models of Matter. The atom contains negatively charged 1. electrons which are embedded in positive material throughout. The atom includes a small, heavy, positively 2. charged nucleus, electrons are found in the empty space around the atom. The atom includes a small, heavy, positively charged nucleus and the electrons are 3. orbiting around the nucleus much like the planets orbit around the sun. All matter is composed of earth, air, fire, 4. and water. Arrange the models above in the order they were proposed by scientists: ______________ ________________ ________________ _____________ Earliest proposal Most Recent Proposal (Record all four digits of your answer in the numerical-response section on the answer sheet.) 2. Which of the following careers would not require a thorough knowledge of chemistry to perform daily tasks? A. Lawyer B. Lab technician C. Medical doctor D. Chemical engineer Science 10 Page | 2  Use the following information to answer numerical response question 2. Warning labels for WHMIS Symbols. 1. Harmful or fatal 5. Health Hazard 2. Oxidizing 6. Harmful to the environment 3. Gas under pressure 7. Harmful 4. Flammable 8. Corrosive 9. Explosion Hazard Arrange the models above in the order they were discovered and proposed by scientists: __________ __________ __________ __________ (Record all four-digits of your answer in the numerical-response section on the answer sheet.) Science 10 Page | 3  Chemistry UNIT TEST Use the following information to answer question 3. The diagram shows the atomic structure of an element X. 3. What is element X? A. aluminium B. beryllium C. boron D. fluorine 4. Which of the following chemical formulas represents an ionic compound? A. Na₃PO₄ₐ B. C₆H₁₂O₆ₐ C. CO₂ₒ D. P₄O₁₀ₐ Science 10 Page | 4 5. The name of the compound with the formula NO₃ₒ is; A. mononitrogen trioxide. B. nitrogen oxide. C. nitrogen trioxide. D. mononitrogen oxide. 6. Which of the following is the correct chemical formula for iron(II) oxide? A. FeO₂ₐ B. Fe₂Oₐ C. Fe₂O₂ₐ D. FeOₐ Science 10 Page | 5  Chemistry UNIT TEST Use the following information to answer numerical response question 3. A student performed an experiment to classify and identify 4 unknown compounds based on various properties. The student recorded the following data. Match the number in the types of solutions concept map above with its description below. (Each number may only be used once). Solution Number: _________ _________ _________ _________ Chemical Formula: Acid Base Ionic Covalent (Record all four digits of your answer in the numerical-response section on the answer sheet.) 7. Which of the following compounds is most soluble in water? A. Ag₂SO₄ B. Mg(OH)₂ C. NaNO₃ D. CaF₂ Science 10 Page | 6 8. Which of the following would not be considered a health factor associated with the long-term use of tobacco products? A. Lung cancer B. Heart disease C. Stained and discoloured teeth D. Skin cancer Use the following information to answer numerical-response question 4. Chemical Reactions. 1. NaHCO₃ₐ + H⁺ₓ → Na⁺ₓ + CO₂ₒ + H₂Oₑ 2. 2 H₂Oₑ → 2 H₂ₒ + O₂ₒ 3. 6 CO₂ₒ + 6 H₂Oₑ → C₆H₁₂O₆ₐ + 6 O₂ₒ 4. C₆H₁₂O₆ₐ + 6 O₂ₒ → 6 CO₂ₒ + 6 H₂Oₑ 5. CH₄ₒ + O₂ₒ → CO₂ₒ + H₂Oₒ 6. C₈H₁₈ₒ + O₂ₒ → CO₂ₒ + H₂Oₒ Match the chemical reactions above with their corresponding processes below. Baking powder in baking ________ (Record in the first column) Combustion of methane ________ (Record in the second column) Electrolysis of water ________ (Record in the third column) Photosynthesis ________ (Record in the fourth column) (Record your answer in the numerical-response section on the answer sheet.) Science 10 Page | 7  Chemistry UNIT TEST Use the following information to answer numerical-response question 5. Descriptions of Chemical and Physical Changes. You cut a slice off a loaf of 1. You blow dry your wet hair 5. bread Fireworks explode giving off 2. 6. You toast a piece of bread heat and light Food colour is dropped into You burn a piece of paper to 3. 7. water to give it colour start a fire Metal oxides mix with water to A piece of wire is coiled to 4. 8. form deposits that clog the pipes form a spring Which descriptions above refer to chemical change? ____________, ____________, ____________, and ____________. (Record all four digits of your answer in the numerical-response section on the answer sheet.) Science 10 Page | 8  Use the following information to answer question 9. 9. This reaction would be i since the reactants have ii energy than the products. The statement above is completed by the information in row Row i ii A. exothermic less B. exothermic more C. endothermic less D. endothermic more 10. The reaction above is an example of which type of reaction? A. double replacement B. single replacement C. decomposition D. formation Science 10 Page | 9  Chemistry UNIT TEST Use the following information to answer numerical-response 6. An important reaction for the environment around Calgary is the reaction of calcium carbonate with acids. For example, the unbalanced equation below shows the first step of the reaction of calcium carbonate with hydrochloric acid: ___ CaCO₃ₐ + ___ HClₓ → ___ H₂CO₃ₓ + ___ CaCl₂ₓ Balance the chemical reaction with the lowest whole number coefficients. If the coefficient is 1 write one in the space, do not leave it blank. _______ CaCO₃ₐ + ______ HClₓ → ______ H₂CO₃ₓ + ______ CaCl₂ₓ first column second column third column fourth column (Record all four digits of your answer in the numerical-response section on the answer sheet.) Use the following information to answer question 11. In the unbalanced reaction shown below, aluminium metal reacts with iron(III) oxide to form two new products Alₐ + Fe₂O₃ₐ → ? + ? 11. Which of the following is most likely the unknown products in the reaction above? A. aluminium oxide and iron B. aluminium oxide and oxygen C. iron(III) oxide and aluminium D. iron and aluminium Science 10 Page | 10  Use the following information to answer numerical-response questions 7 & 8. The mole is used to express the number of particles (such as atoms, ions, molecules, or formula units) in a given sample of a substance. Avogadro's number or Avogadro's constant defines one mole as the mass of a substance that contains 6.02 x 10²³ particles of the substance. 1 mol = 6.02 x 10²³ particles (atoms, ions, molecules, or formula units) The number of molecules in 2.7 mol of H₂Sₒ, expressed in scientific notation, is a.b x 10cd. The values of a, b, c and d are ₕ, ₖ ,ₗ , and ₘ. (Record all four digits of your answer in the numerical-response section on the answer sheet.) The number of moles in 4.86 x 10²⁵ formula units of K₃PO₄ₐ is _____________ mol. (Record your three-digit answer in the numerical-response section on the answer sheet.) Science 10 Page | 11  Chemistry UNIT TEST Use the following information to answer numerical-response question 9. The mass of zinc produced in this reaction would be ___________ g. (Record your three-digit answer in the numerical-response section on the answer sheet.) Science 10 Page | 12