MODERN CHEMISTRY CHAPTER 1 TEST Matter and Change MULTIPLE CHOICE On the line at the left of each statement, write the letter of the choice that best completes the statement or answers the question. 1) Chemistry is a natural science that deals with the study of . a) living things and their life processes b) the physical features of Earth c) the composition, structure, properties, and changes of matter d) the composition, motion, and relative positions of stars and planets 2) The branch of chemistry that identifies the composition of materials is . a) biochemistry c. physical chemistry b) organic chemistry d. analytical chemistry 3) An example of an extensive property is . a) mass c. color b) density d. boiling point 4) An example of an element is . a) sugar c. water b) soil d. oxygen 5) An example of a heterogeneous mixture is . a) salt c. mud b) nitrogen d. air 6) Which process is a chemical change? a) heating to boiling b) dissolving in alcohol c) burning in air d) slicing into two pieces 7) Water boiling at 100°C is an example of a(n) . a) chemical property c. physical property b) extensive property d. chemical change 8) Every pure chemical compound consists of two or more elements . a) combined chemically b) that can be separated by a physical change c) that cannot be separated d) combined in any proportion CHAPTER 1 TEST continued FILL IN THE BLANK Write the correct term (or terms) in the space provided. 9. The two properties that all matter has in common are _________________________________________________&_______________________________________________. 10. In the periodic table, elements in the vertical columns together form a(n) ______________________________________. 11. A mixture that has the same proportion of components throughout is called ______________________________________. 12. The substances that are formed by a chemical change are called the ______________________________________. 13. The element type that is a good conductor of electricity is a(n) ______________________________________. 14. The state of matter in which a material has a definite volume and a definite shape is the ______________________________________. 15. Elements are arranged in the periodic table according to their ______________________________________. 16. The smallest unit of an element that has the properties of that element is a(n) ______________________________________. 17. When atoms of two or more elements are chemically bonded, the substance formed is a(n) ______________________________________. 18. If testing shows an element is a poor conductor of electricity, it is a(n) ______________________________________. 19. A blend of two or more kinds of matter, each of which retains its own identity and properties, is a(n) ______________________________________. 20. If a material is tested and every sample has exactly the same properties and the same composition, it is a(n) ______________________________________. 21. __________________________research is carried out for the sake of increasing knowledge. 22. A(n) _________________________ is an element that has some characteristics of metals and some characteristics of nonmetals. CHAPTER 1 TEST continued For each of the following chemical reactions, identify the reactants and the products. 23. carbon + oxygen carbon dioxide reactant(s): _______________________________________ product(s): _______________________________________ 24. mercury(II) oxide mercury oxygen reactant(s): _______________________________________ product(s): _______________________________________ MATCHING On the line to the left of each symbol, write the letter of the correct name. 25. _________Sr a. silicon 26. _________Cl b. sodium 27. _________Co c. cobalt 28. _________Si d. iron 29. _________Na e. tin 30. _________Cu f. strontium 31. _________Fe g. chlorine 32. _________Au h. gold 33. _________Sn i. Copper j. silver Classify each of the following as either a physical change or a chemical change. 34. ________________________________________melting an ice cube 35. ________________________________________burning a piece of paper 36. ________________________________________slicing a loaf of bread 37. ________________________________________sharpening a pencil 38. ________________________________________decomposing mercury(II) oxide 39. ________________________________________dissolving sugar in water CHAPTER 1 TEST continued SHORT ANSWER Write the answers to the following questions in the space provided. 40. Explain the differences between solid, liquid, and gaseous states in terms of the arrangement of the particles. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 41. Contrast mixtures and pure substances. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 42. State the law of conservation of energy. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 43. Contrast heterogeneous and homogeneous mixtures. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 44. How could you prove that water is a compound and not an element? ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________