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CHEMISTRY 1 TEST REVIEW

This chemistry test review covers topics such as atom structure, elements, compounds, and physical/chemical changes. Learn about the different parts of an atom, identify elements and compounds, understand physical and chemical properties, and distinguish between physical and chemical changes.

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CHEMISTRY 1 TEST REVIEW

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  1. CHEMISTRY 1 TEST REVIEW

  2. 1. Label the parts of the atom below. electron nucleus proton neutron

  3. 2. All matter is made up of a. cells b. atoms c. molecules d. compounds

  4. 3. Which of the following is not an element? a. Cl c. NaCl b. N d. Na

  5. 4. A positively charged particle is a. an electron  c. a neutron   b. a proton  d. an isotope

  6. 5. Which of the following would be found outside the nucleus of an atom? a. protons  b. electrons    c. neutrons d. protons and neutrons

  7. 6. A chemical formula like CO2 represents a. an element c. an atom    b. an electron  d. a compound

  8. 7. A substance made up of two or more elements that have chemically combined is a. a mixture  c. an atom    b. a compound d. an element

  9. 8. A substance that cannot be changed into simpler substances by a chemical change is called a (an) a. element. c. liquid. b. solid. d. mixture.

  10. 9. Al, Cu, N, and O are symbols for a. compounds. c. elements. b. mixtures. d. molecules.

  11. 10. When 2 or more substances are physically combined, a(n) _____ is produced a. compound c. element b. mixture d. molecule

  12. 11. The smallest part of a compound is called a(n) a. compound c. element b. mixture d. molecule

  13. 12. Sand and iron particles that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles? a. Use tweezers to separate them. b. Add water to the mixture. c. Use a magnet to separate them. d. Pour the mixture into a filter.

  14. 13. Identify each example below as a physical or chemical property: The object has a mass of 5gm Sodium reacts with water. Silver is a shiny metal. The iron rusts when exposed to water. The fabric is flammable. Mercury is a liquid at room temperature. PHYSICAL CHEMICAL PHYSICAL CHEMICAL CHEMICAL PHYSICAL

  15. 14. PHYSICAL OR CHEMICAL CHANGE? PHYSICAL

  16. 15. PHYSICAL OR CHEMICAL CHANGE? CHEMICAL

  17. 16. PHYSICAL OR CHEMICAL CHANGE? CHEMICAL

  18. 17. PHYSICAL OR CHEMICAL CHANGE? PHYSICAL

  19. 18. Identify the solid, liquid and gas! Explain your answer. Gas Molecules very far apart Solid Molecules packed close together Liquid Molecules a little farther apart

  20. 19. The particles of a substance are closest together in a. a solid b. a liquid c. a gas d. plasma

  21. 20. The particles of a substance move the fastest in a. a solid b. a liquid c. a gas

  22. 21. The particles of a substance that does not have a definite volume or shape is a. a solid c. a liquid b. a gas d. plasma

  23. 22. When a liquid becomes a solid, a. it melts b. it condenses c. it freezes d. it evaporates

  24. 23. _______ is the process in which liquid changes to gas.   a. Sublimationc. Condensation b. Evaporationd. Melting

  25. 24. The change of a solid to a gas is called a. freezing c. melting b. sublimation d. vaporization

  26. 25. When substances go directly from the solid phase to the gas phase, the phase change is called a. sublimation c. condensation b. evaporation d. vaporization

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