Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Study Guide for 1 st Semester EXAM – 2016-2017 1. Explain why fossil fuels are nonrenewable: 9. Substances that are ______________ dense float on _____________________________________________ substances that are __________________ dense. _____________________________________________ How many elements are in the compound above? __________ 10. List five indications (signs) that a chemical change is taking place: _____________________________________________ How many atoms are in the compound? ____________ _____________________________________________ 2. KMnCl2K 3. What is the smallest part of an element that still retains properties of that element? _________ 4. List the major elements in Earth’s crust: _____________________________________________ _____________________________________________ _____________________________________________ 11. Describe the energy transformations that occur when a hair dryer is turned on: __________________________________________ _____________________________________________ _____________________________________________ 12. During energy transformations some energy is 5. What are the two most abundant gases in the earth’s atmosphere? ____________________________ always transformed into …? ___________________ 6. Classify the following properties as physical or chemical: (Hints: Can you observe the property without changing the matter? Reactivity is always a chemical property.) __________________________________________ Property malleability color thermal conductivity reactivity with oxygen flammability reactivity with acid density volume solubility Physical Chemical 14. Give some examples of things that start with chemical energy: ________________________________________ 15. What is the name of the hardness scale used to classify minerals? ________________________________________ 16. In your own words define: 7. Classify the following changes as physical or chemical: (Hints: Has new matter been formed? Reactions are always chemical changes.) Change silver tarnishing baking a cake melting rusting burning dissolving copper reacting with air bleaching breaking a pencil stretching 13. Describe the energy transformations that occur when a toaster is turned on: Physical 8. A chemical change has taken place if a _________ ______________ has formed. Chemical Conduction: __________________________ __________________________________ Convection: __________________________ __________________________________ Radiation: ___________________________ __________________________________ 17. Thermal energy is transferred as heat from a warmer object to a cooler object until ______________ ____________________________________________. 18. List some renewable, nonrenewable, and inexhaustible energy resources: Energy Resources Renewable Nonrenewable Inexhaustible 23. Where are the following on the periodic table? Metals: ___________________________________ Nonmetals: _______________________________ Metalloids: _______________________________ 24. Fill in the blanks in the following table: Element Name Chemical Symbol Hydrogen 19. Describe the energy transformations in a thermal power plant (such as a coal burning plant): ________________________________________ ________________________________________ 20. How is mineral hardness measured? ________________________________________ ________________________________________ 21. How can you determine the density of an irregular solid? ____________ ___________________________ ________________________________________ 22. Calculate the densities of the following substances. Use the griddables below to record your answers: Volume Mass K Fe Sodium 25. Describe the energy transformations for each energy resource: Windmill ________________________________________ Hydroelectric Power Plant – ________________________________________ Solar Water Heating Panel – ________________________________________ 1 26 cm3 78 g 2 47 cm 3 249.1 g 3 16 cm3 51.2 g 4 Phosphorus Julius has a cube of metal that measures 2 cm on a side. Its mass is 80.8 grams. What is its density? Geothermal Power Plant – ________________________________________