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Name: _______________________________________________________________ Date: __________________ Pd: _____________ Review for Bundle 3 Exam: Matter Instructions: Answer all of the questions on this review and return to your teacher on the day of your test. SHOW ALL WORK on any problems that involve calculations and answer each question completely to receive credit. 1. A sample liquid is cooled from 150°C to 30°C, causing the liquid to change into a solid. What type of change has occurred and how do you know? 2. When the fuse ignites the contents of a firework, oxygen is consumed and carbon dioxide is released as a result of which type of change? What type of chemical reaction is being described? 3. Balance the following equation. Show your work in a T – table and write the coefficient ratio of the final balanced equation. ___ Ca(OH)2(aq) + ___ CO2(g) → ___ CaCO3(s) + ___ H2O(l ) 4. You wake up early to prepare breakfast. You love banana pancakes when the banana is sliced and mixed in the pancake mix before cooking AND sliced and put on top of the pancakes with the syrup. This leaves you with the option of being able to eat the banana in the pancakes or pick them out to eat by themselves. The pancakes that you want are considered what kind of mixture? Explain your answer. 5. Digestion involves both chemical and physical changes. Write the type of change that occurs in the digestive system in each stage of digestion below. Stage of Digestion Saliva breaking starch into simple sugars Teeth chewing steak Enzymes breaking down proteins into amino acids Intestines draining water from digested food Small intestine pushing digested material toward the colon for removal from the body Chemical or Physical Change Name: _______________________________________________________________ Date: __________________ Pd: _____________ 6. An experiment is performed in which a crystalline substance is added to a beaker filled with room temperature water. The following observations were made: I. The crystals dissolve. II. A precipitate is formed. III. The bottom of the beaker feels warm to the touch. IV. Bubbles begin forming within the water. Write each observation in the correct column in the table below: Chemical Change Physical Change 7. Hydrogen peroxide (H2O2) is a toxic by-product of cellular metabolism in aerobic organisms. The reaction shown occurs within the cells to prevent the accumulation of hydrogen peroxide. H2O2 H2O + O2 What kind of reaction is this? _______________________________________________________________ Is this a balanced reaction? YES NO If not, balance it below and show your work. 8. If enough heat was REMOVED from B, it would change into which substance below? Name: _______________________________________________________________ Date: __________________ Pd: _____________ 9. If 58 grams of NaCl is used to produce 143 grams of AgCl and 85 grams of NaNO3, how many grams of AgNO3 is used in the following reaction? SHOW ALL OF YOUR WORK. NaCl + AgNO3 AgCl + NaNO3 10. In the space below, create the Matter Concept Map used in class. You must have all of the following vocabulary correctly organized in your map: Homogeneous Mixture Pure Substance Solution Solute Heterogeneous Mixture Solvent Compound Colloid Element Mixtures Suspension 11. What type of reaction is represented by the equation Fe + Cl2 → FeCl3? _________________________ Balance this equation and show your work below. Name: _______________________________________________________________ Date: __________________ Pd: _____________ Use the graph below to answer questions 12 - 14. 12. Heat is added between points D and E. All of the heat being added is going to do what to the substance? 13. The curve above represents the Heating Curve of Water. In which section of the graph will frozen water melt into a liquid? What happens to the temperature in this section of the graph? Why? 14. Heat is removed from liquid water starting at 85°C until all of the liquid has become frozen into ice at 0°C. Which parts of the water curve above represent this process? Explain why the sections you chose represent each process in the question. 15. You need a bit of energy to make it through the last of the day. You add some sugar to your water to make it taste a bit better and gain some extra energy. The sugar that you have just added would be considered the ________________________________________ and the water would be the __________________________________________________. 16. If you mix Calcium Oxide with Aluminum, it will yield Aluminum Oxide and Calcium. What type of chemical reaction is this? ____________________________________________________________________________ Balance the chemical equation for this reaction, and state its coefficient ratio. CaO + Al → Al2O3 + Ca Name: _______________________________________________________________ Date: __________________ Pd: _____________ 17. What type of chemical reaction absorbs energy and requires energy for the reaction to occur? What type of chemical reaction emits energy and does not require energy to occur? 18. The following equation for the photosynthesis reaction is unbalanced. 6CO2 + H2O C6H12O6 + 6O2 Balance this chemical equation and state the coefficient ratio. SHOW YOUR WORK. 19. Which equation properly describes the reaction between X and Y? A. 3X + 8Y X3Y8 B. 3X + 6Y X3Y6 C. X + 2Y XY2 D. 3X + 8Y 3XY2 + 2Y 20. In a chemical reaction, the total mass of the reactants is _________________________________________________ ________________________________________________________________________________________________________________. 21. Sublimation is the process by which certain materials change directly from a solid to a gas without becoming a liquid first. Frozen carbon dioxide, which is called dry ice, undergoes sublimation. What kind of change is this and which phases of matter are represented in the process? 22. Sodium chloride (NaCl) can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages. Explain the two stages needed to correctly separate NaCl from rock salt below. Name: _______________________________________________________________ Date: __________________ Pd: _____________ Analyze the table below, and use it to answer question #23. The following symbols each represent one atom of different elements: 23. Which of the above correctly represents a chemical equation showing the law of conservation of mass in a chemical reaction? Explain your answer. 24. What are the correct coefficients needed to balance the following equation? SHOW ALL WORK. ____Al + _____ O2 → ____ Al2O3 Use the chart below to answer question 25. Reaction Reactant Reaction 1: NaOH NaOH + HCl NaCl + H2O HCl Reaction 2: Mercury II Decomposition of mercury II oxide oxide Mass 80 g 73 g 433 g Product NaCl H2O Liquid mercury Mass ? 36 g 401 g 25. A chemist measured the mass of mercury II oxide, and then heated it and measure the mass of the resulting liquid. Her measurements are shown in the chart. Why is the mass of the product less than the mass of the reactant? 26. In your classroom, when Ammonium Hydroxide is mixed with Copper (II) Sulfate, the products are a powdery substance called Copper (III) Hydroxide and a liquid known as Ammonium Sulfate. Your teacher says this is a chemical change. What is the evidence of her claim?