Grade 9 Science. Matter and Chemical Change. Sample Achievement Test

Transcription

1 Grade 9 Science Matter and Chemical Change Sample Achievement Test

2 Sample test authors: Kerry Blum Dan Grassick Kamal Johal Claude Langlois Joan Liland This test was developed by the authors to share with colleagues and students in the Calgary Board of Education. Please respect their work and do not distribute outside the CBE. This work may continue in future years. Please forward contributions and suggestions to Curriculum Support, Science Specialist, Willowglen (through internal CBE mail) or call Copyright, Do not distribute or reproduce for use outside of the Calgary Board of Education.

3 Matter and Chemical Change Science 9 Sample Achievement Test Questions Use the following information to answer question 1. The following properties can be used to describe a substance 1 Reactivity 2 Colour 3 Texture 4 Lustre 5 Crystal Structure 6 Taste 7 Odour 8 Solubility 9 Freezing Point 10 Melting Point 11 State 12 - Density An unknown substance is solid, colourless, odourless, flammable, and dissolves in water. 1. What properties have been used to identify the unknown substance? A B C D Which of the following are chemical properties? I- Ductility II- Stability III-Reactivity IV- Toxicity V- Density VI- Boiling Point A. I, II, and III B. II, III, and IV C. III, IV, and V D. IV, V, and VI 3. An example of a chemical reaction is indicated by the: A. disappearance of snow on a sunny day B. bubbling of carbon dioxide in a glass of cola C. change in temperature of the water in a hot tub D. formation of rust when a metal hammer is left in the rain 4. Cooking an omelette on a Saturday morning is a A. chemical equation because chemicals are being used up B. physical reaction because it is not a reversible reaction C. word equation because the recipe used words to describe what to do D. chemical reaction because it is not a reversible reaction

4 5. Which of the following is a property of hydrogen? A. it is a halogen that can burn and explode B. it does burn well because it is an inert gas C. it is a noble gas that facilitates combustion D. it is an inert gas that inhibits combustion Use the following information to answer questions 6 and 7. MATTER Solids, liquids, and gases Mixtures 1 Heterogenous H2O, CO2 K, He, C, Na Salt Water What label belongs in box 4? A. Elements B. Compounds C. Solutions D. Pure Substances 7. What label belongs in box 6? A. Heterogeneous mixtures B. Homogeneous mixtures C. Mechanical mixture D. Solutions

5 Use the following information to answer question 8. A new element has been discovered that conducts electricity and heat, has a shiny appearance, and is solid at room temperature. 8. This is most likely a A. metal B. non-metal C. metalloid D. noble gas 9. Many household cleaning agents are strong bases that should be stored out of the reach of children because they are A. acidic and explosive B. neutralizing but explosive C. caustic and corrosive D. endothermic and acidic 10. People blow on small campfires to increase the size of the flames by providing the fire with more A. carbon dioxide B. hydrogen C. oxygen D. nitrogen Use the following information to answer question 11. Jonas is given a sodium flare to help him see better when he is scuba diving. The reaction between the sodium and the water will cause the flare to glow brightly. Group 1 Group 2 Groups 3-12 Group 13 Group 14 H (hydrogen) Li (lithium) Be (beryllium) Transition B (boron) C (carbon) Na (sodium) Mg (magnesium) Metals Al (aluminum) Si (silicon) 11. All alkali metals react with water in the same way as sodium. What other element could be used for a diving flare? A. lithium B. beryllium C. boron D. silicon

6 12. Which of the following graphs shows the exothermic reaction between magnesium and hydrochloric acid? A. C. Temperature C Temperature C Time B. D. Time Temperature C Temperature C Time Time Use the following information to answer question 13. The roofs on old buildings like those in Ottawa and Quebec City are made of thin copper sheets. Over the years the colour of the roof sheets on the Chateau Frontenac, a famous hotel in Quebec City, have changed from brass to green by the following reaction. copper + oxygen copper oxide 126 g g 158 g 13. What would be a reasonable estimate for the mass of oxygen that was consumed in this reaction? A. 32 g B. 126 g C. 158 g D. 284 g

7 Use the following information to answer question 14. 2H 2 0 (l) Electrolysis of Water electricity 2H 2 (g) + O 2 (g) 14. How could you increase the production of oxygen and hydrogen during the electrolysis of water? A. by increasing the amount of dissolved hydrogen B. by decreasing the amount of dissolved hydrogen C. by increasing the amount of electrical current D. by decreasing the amount of electrical current 15. The law that determines how much oxygen is produced in this reaction is A. the Law of Conservation of Mass B. the Periodic Law C. the Law of Definite Proportions D. the Law of Universal Attraction 16. Which of the following methods best explains why you would use small pieces of wood to start a campfire? A. increased concentration B. increased temperature C. increased surface area D. increased combustible mass

8 Use the following information to answer question 17. When Mendeleev was developing the first periodic table of elements, he arranged the elements by atomic weight and left spaces empty for elements that had not yet been discovered. He then went through and guessed the properties for the elements that were missing. Ga 69.7 amu Si 26.1 amu Unknown amu Sn amu As 74.9 amu 17. What would be a reasonable guess at the atomic mass unit (amu) of the undiscovered element? A amu B amu C amu D amu Use the following information to answer question 18. atomic number common ion charges atomic mass units 18. The above elements, organized by increasing number of electrons are A. nitrogen, oxygen, fluorine, neon B. neon, fluorine, oxygen, nitrogen C. fluorine, oxygen, neon, nitrogen D. oxygen, neon, nitrogen, fluorine

9 19. The number of neutrons in the fluorine atom is A. 9 B. 10 C. 19 D Which of the following statement best explains the difference between ionic and molecular compounds? A. Ionic compounds form chemical bonds by sharing electrons B. Molecular compounds are formed when electrons are transferred C. Molecular compounds form ions when dissolved in water D. Ionic compounds are formed when electrons are transferred 21. What is the correct chemical name for BaCl2? A. barium dichloride B. beryllium dichloride C. barium chloride D. beryllium chloride 22. What is the correct chemical formula for carbon tetrachloride? A. CCl B. CCl4 C. C4Cl D. C4Cl4 23. A molecule of methane (CH4) is made up of A. four atoms of hydrogen for each carbon atom B. four atoms of carbon for each hydrogen atom C. twice as many hydrogen atoms as carbon atoms D. twice as many carbon atoms as hydrogen atoms 24. Which of the following describes an ion? A. an atom that has more or less electrons than protons B. a molecule that has more or less electrons than protons C. a compound that has more or less electrons than protons D. an atom that has more or less neutrons than protons

10 25. Which of the following models best represents a molecule of carbon dioxide? = carbon = oxygen A. B. C. D. Use the following information to answer questions 26 and 27. The following reaction is called Cellular Respiration. It is how most animals break down sugars into energy for their cells to use. 6 O2 (g) + C6H12O6(s) 6 H2O(l) + 6 CO2(g) + energy 26. The reactants for cellular respiration are A. water and carbon dioxide B. glucose and carbon dioxide C. water and oxygen D. glucose and oxygen 27. The word equation that describes this reaction is A. water + carbon dioxide + energy (chemical) oxygen + glucose B. water + oxygen + energy (chemical) carbon dioxide + glucose C. oxygen + glucose water + carbon dioxide + energy (chemical) D. water + oxygen glucose + carbon dioxide + energy (chemical) 28. Someone tells you that a small quantity of copper (II) sulfate was dissolved in water. This is a A. qualitative observation B. quantitative observation C. chemical observation D. predicted observation

11 Use the following information to answer question 29. Sharma conducted tests on various metals and observed that: magnesium (metal) + oxygen (gas) magnesium oxide (white powder) During further research using other chemicals, he observed that: substance A (metal) + oxygen (gas) white powder substance B (metal) + oxygen (gas) black powder substance C (metal) + oxygen (gas) black powder Sharma infers that substance A is magnesium 29. Which statement is true? A. The observations support the inference, but further evidence is needed. B. The observations support the inference, and no further evidence is needed. C. The observations do not support the inference, and further evidence is needed. D. The observations do not support the inference, and no further evidence is needed.

12 Use the following information to answer question 30. There are many different systems of safety symbols used in labeling chemicals. The following Stay Safe symbols are used on chemicals that are found in the household. The Stay Safe Program is taught to elementary students in the same way that WHMIS symbols are taught to junior and senior high students. Flammable Corrosive Poisonous Explosive 30. WHMIS is the preferred labeling system for businesses and schools across Canada. The WHMIS label that is correctly paired with the corresponding Stay Safe symbol is A. C. B. D.

13 NUMERICAL RESPONSE 1 Identify the following safety symbols. CAUTION DANGER WARNING WHMIS