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Science 2nd 9 w test
Science Second Nine Weeks Test: Question and Anwser
| Question | Answer |
|---|---|
| What is used in thermostats? | Bimetallic strips |
| What device uses outside energy to transfer thermal energy from cool area to a warm area? | Refrigerator |
| What temperature is absolute zero? | 0 degrees Kelvin |
| Describe the volume of a gas. | No definite volume |
| What is a device that we use that involves thermal expansion? | Thermometer |
| How does the melting point of water compare to the freezing point of water? | They are equal |
| What temperature does water freeze on the Celsius Scale? | 0 degrees Celsius |
| Name three common temperature scales. | Fahrenheit, Celsius, Kelvin |
| What is the phase change from a liquid to a solid? | Freezing |
| What temperature does water freeze on the Fahrenheit scale? | 32 degrees fahrenheit |
| What are 3 heat transfers. | Conduction, Radiation, Convection |
| What happens to a bimetallic strip when it is heated? | It expands |
| What is the coldest temperature on the Celsius scale? | -273 degrees Celsius |
| What is the phase change from gas to liquid? | Condesation |
| When you see circular arrows going around and around, which type of heat transfer is that? | Convection |
| What temperature does water boil on Celsius scale? | 100 degrees Celsius |
| What is the phase change from liquid to gas? | Vaporization |
| What is the phase change from solid to liquid? | Melting |
| What are 3 ways to increase solubility. | Temperature increase, stirring, and crushing |
| What type of chemical reaction releases energy? | Exothermic |
| What type of chemical reaction absorbs energy? | Endothermic |
| What are 4 clues that a chemical reaction has occurred? | Change in temperature, gas production, color change, and production of new material |
| What materials are present at the beginning of the reaction? | Reactants |
| What are the ending materials in a chemical equation? | Products |
| Name two advantages of using nuclear power. | It is safer and cleaner |
| Name two disadvantages of using nuclear power. | It makes nuclear waste and hard to mine |
| What process do nuclear power plants use to produce energy? | Nuclear Fusion |
| What nuclear process powers the sun? | Nuclear Fission |
| State 4 properties of nonmetals. | Poor conductors of heat, dull, gases, brittle |
| Give 4 example of nonmetals. | wood, plastic, cloth, air |
| State 4 properties of metals. | Good conductors of heat, shiny, ductile, malleable |
| Give 4 examples of metals. | Gold, zinc, silver, aluminum |
| Where are the metals located on the periodic table? | To the left of the staircase |
| Where are the nonmetals located on the periodic table? | To the right of the staircase |
| Which type element forms positive ions in chemical reactions? | Metals |
| Which type element gain electrons in chemical reactions? | Nonmetals |
| Which type elements form a covalent bond? | Nonmetals |
| Which type of elements form an ionic bond? | Metal and nonmetals |
Created by:
laurenbarrett
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