Name ____________________ Period ____ Chapter 1: Introduction to Chemistry/ Lab Equipment and Safety Chapter 3: Matter – Properties and Changes TEST REVIEW Draw a picture of each piece of lab equipment 1. Beaker 2. Graduated cylinder 3. Bunsen burner 4. Erlenmeyer flask For each statement below, write TRUE or FALSE 5. When smelling a chemical in lab one should use the wafting technique to prevent harmful chemicals from being inhaled directly.____ 6. When water and acid are mixed together heat is given off. The proper procedure for diluting an acid is to add water into acid._____ 7. When weighing out a chemical on the balance it is appropriate to weigh the chemical directly on the balance pan._____ 8. An intensive property depends on the amount of material present. ______ 9. Matter is described as anything that has mass and takes up space._______ Choosing appropriate lab materials for experiments: 10. Your little brother brought a jar of Galveston beach water back from his trip. It has sand particles, salt particles, and water. Describe or draw the techniques/equipment you would need to separate this mixture. (Hint- to get all the points here more than one technique is necessary) 11. If a ransom note was found at a crime scene and a suspected writing utensil was found at the scene, which separation technique would you use for comparison? (Distillation, chromatography, filtration, evaporation) Draw the set up for this experiment. 1 Labeling 12. Label as solid, liquid or gas and describe the movement/spacing of particles including information about definite volume in the table below. (Look carefully, they’re not “in order”.) PHASE C B A How do the atoms move? Is volume the same when the container is open? What is the space between atoms like? A B C 13. Circle the words that make the statement trueAll of the following phase changes in the diagram below are considered ( physical / chemical ) ( changes / properties ) 14. Explain the difference between a monatomic gas and diatomic gas by looking at the image below. _Monatomic gases are made of____________________________ _________________________________________________ while diatomic gases are_______________________________ __________________________________________________ For each item, write the letter of the matching item in the word bank. ____ 15. Refers to physical characteristics such as color, odor, or shape ____ 16. Refers to mass, volume, temperature ____ 17. A variable controlled by the experimenter a. Observation b. Qualitative data c. Quantitative data ____ 18. Changes in value based on the controlled variable d. Independent variable ____ 19. The act of gathering information e. Dependent variable 2 Read the following experiments and answer the questions. 20. One tank of gold fish is fed once a day, a second tank twice a day, and a third tank four times a day during a six week study. The fish’s body fat is recorded. (Hint- try drawing the graph for the X/Y and the variable on the X is the independent, the variable on the Y axis is the dependent variable. Label the axis as well as plotting the data you think will occur. A. What is the independent variable ____________________________ B. What is the dependent variable? _______________________________ Study the classification of matter shown: Circle the appropriate word for the statements below. 21. Elements – ( can / cannot ) be broken down into smaller substances by chemical or physical means. 22. Compounds – can be decomposed by ( physical / chemical ) means. 23. Mixtures - ( can / cannot ) be separated by physical means. >>>24. In the picture above, circle the boxes containing pure substances. 3 Use each of the terms below just once to complete the passage. chemical physical density properties mass substance Matter is anything with (25)_____________ and volume. A (26)______________ is a form of matter with a uniform and unchanging composition. Substances have specific, unchanging (27) _____________ that can be observed. Substances have both physical and chemical properties. (28) _______________ properties can be observed without changing a substance’s chemical composition. Color, hardness, and (29) ____________ are examples. Other properties cannot be observed without changing the composition of a substance. These are called (30) _____________ properties. An example is the tendency of iron to form rust when exposed to air. Use the following words once to fill in the passage below. Heterogeneous Sand-water mixture Mixtures Solutions Matter is categorized as either a substance or a (32)__________. (31)__________. An example of a substance is Mixtures are categorized as either homogenous mixtures or mixtures. Another name for a homogenous mixture is a mixture is Salt-water mixture Water (35)___________. (34)_____________. An example of a homogenous mixture is (33)_____________ An example of a heterogeneous (36)________________. Circle the letter of the choice that best completes the statement or question. 37. A substance that cannot be separated into simpler substances by physical or chemical means is a(n) a. Compound b. Element c. Mixture d. Solution 38. A chemical combination of two or more different elements is a(n) a. Compound b. Element c. Mixture d. Solution 39. Which of the following is an example of an element? a. Copper (Cu) b. Water (H2O) c. Air d. Sugar (C12H22O11) 40. Which of the following is an example of a compound? a. Water (H2O) b. Air c. Silver (Ag) 41. Which of the following is an example of a solution? a. Copper (Cu) b. Sugar(C12H22O11) c. Water (H2O) d. Copper (Cu) d. Air 4 42. Label groups/family # 1, 2, 14-17 above zig-zag, (17’s special name), 18 on the periodic table below. Also, what does the shaded group represent? Zig-zag boxes: 43. List the properties of a metal vs the properties of a nonmetal. (Use these properties: “can conduct electricity”, insulator, malleable, brittle, ductile, lustrous (shiny), dull, hard, soft(can bend without breaking), sometimes responds to magnets, usually a gas at room temperature,) Metals Nonmetals a. _____________________________ a. _____________________________ b. _____________________________ b. _____________________________ c. _____________________________ c. _____________________________ d. _____________________________ d. _____________________________ e. _____________________________ e. _____________________________ f. _____________________________ Physical/Chemical Properties (Extensive vs Intensive) Identify the follow properties as Chemical or Physical by placing a check in the appropriate box. For physical properties, indicate whether the property is Extensive or Intensive. Which physical property changes if more of the material is there? (Extensive or Intensive properties) Which physical property stays the same, even if material is added ? (Extensive or Intensive properties) Property 43. Volume 44. Flammability 45. Ductility 46. Ability to corrode 47. Mass 48. Malleability 49. Length 50. Color Chemical Physical Physical Properties Only Extensive Intensive 51. Reacts with water 52. Know element symbols from quiz! 5