Review Packet #2 Unit 6: Solutions, Acids, and Bases 1. In a solution, the __________________ always dissolves in the __________________. 2. Solutions where more than the maximum amount of solute is dissolved in a solution for that temperature are called __________________. 3. Water is referred to as the __________________. 4. __________________ means that it conducts an electric charge. 5. Solutions where less than the maximum amount of solute is dissolved in a solution for that temperature are called __________________. 6. Solutions with __________________ compounds as the solute will conduct electric current, while solutions with __________________ compounds as the solute will not conduct electric current. 7. _________________ is a description of how much solute is dissolved in the solvent. ________________ solutions have small amounts of solute dissolved in the solvent, while ________________ solutions have large amounts of solute dissolved in the solvent. 8. Solute will dissolve in solvent more quickly if the __________________ is increased, the __________________ is increased, or if the solutions is __________________. 9. Solutions where the maximum amount of solute is dissolved in the solvent are called ________________. 10. Use the graph to the right to help answer the following questions. a. What is the solubility of NaCl at 10°C? __________________ b. What is the temperature of KClO3 when the solubility is 10g per 100g of water? __________________ c. Which solute will dissolve the least at 10°C? __________________ d. Which solute will dissolve the most at 60°C? __________________ e. Which solute has a solubility of 80g per 100g of water at 10°C? __________________ 11. List the properties of acids and bases in the table below. Acids Bases 1.

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12. Underline the acids, circle the bases, and put a box around the neutral substances listed below. a. Lemons i. Soap b. Stomach Acid j. Distilled Water c. Baking soda k. Shampoo d. Ammonia l. Blood e. Vinegar m. Glass Cleaner f. Clothing Dyes n. Marinades g. Tomatoes o. Carbonated Drinks h. Bleach p. Antacid

Unit 7: Radioactivity 1. What are some factors that make for an ideal location for a radioactive waste facility? ___________________ ________________________________________________________________________________________ 2. Compare and contrast alpha, beta and gamma decay. What happens to their atomic and mass numbers? What is the difference in their energies? What do they produce? How dangerous are they? How can they be stopped? _______________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 3. What is a positron? How is it different than an electron? _________________________________________ ________________________________________________________________________________________ 4. When completing nuclear decay equations, how are they set up and what numbers appear at the top and the bottom? ________________________________________________________________________________ 5. What occurs during radioactive decay? How is this different than radiation? __________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 6. Compare and contrast fission and fusion. _______________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 7. What is half-life? _________________________________________________________________________ ________________________________________________________________________________________ 8. In radioactive dating, what substance is used to date organic material and what substance is used to date inorganic material? _______________________________________________________________________ 9. What is background radiation? What sources of it surround you daily? _______________________________ ________________________________________________________________________________________

10. What is a nuclear reactor? What are the advantages of nuclear energy? What are the disadvantages of nuclear energy? _________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 11. What are other uses of radioactivity or radioactive substances? _____________________________________ ________________________________________________________________________________________ 12. The half-life of hydrogen-3 is 12.32 years. If the original sample is 40 grams, how many years have passed when 2.5 grams remains? __________________________________________________________________ 13. A patient is administered 20 milligrams of iodine-131. How much of this isotope will remain in the body after 40 days if the half-life for iodine-131 is 8 days? _____________________________________________ 14. How many grams were in the original sample of an isotope if 2 grams remained after 40 days? (The half-life is 5 days.) _______________________________________________________________________________

Unit 8: Motion 1. What is the difference between speed and velocity? What units have to be used for speed and velocity? ____ ________________________________________________________________________________________ ________________________________________________________________________________________ 2. What is a vector? What is a scalar? Which quantities are vectors and which are scalars? ________________ ________________________________________________________________________________________ 3. What is the difference between distance and displacement? ________________________________________ ________________________________________________________________________________________ 4. What does the slope indicate on a distance-time graph? How do you know there is no motion on a distancetime graph? How can you identify acceleration on a distance-time graph? ____________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 5. What is acceleration? What are the ways that acceleration can occur? When is there no acceleration? _____ ________________________________________________________________________________________ ________________________________________________________________________________________ 6. What does the slope indicate on a speed-time graph? How do you know there is no acceleration on a speedtime graph? How do you know that an object is slowing down or speeding up? _______________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 7. A speed-time graph shows that a person moves a 1.5 m/s for 5 s. The person increases to 3 m/s over the next 10 s. Draw the diagram and then describe the slope of the graph from 0-5 s and 5-15 s. _________________

8. Jeremiah drove 4 miles north to get to work. He had to drop off a letter at the post office so he drove 3 miles west and another mile north. Afterwards, he had to drive to the grocery store that was 2 miles south and 2 miles east. He drove 1 mile west and 3 miles south in order to reach his child’s daycare. What is his displacement and what was the distance that he drove? (HINT: Draw it.) ____________________________ 9. A distance-time graph indicates that an object moves 25 m in 3 s and then is at rest for 3 s. What is the average speed of the object? ________________________________________________________________ 10. James rode his bike uphill for 15 m before riding 35 m back down the hill. What is James’s displacement on his bike? ________________________________________________________________________________ 11. What is the acceleration when moving from 3.5 m/s to 9.0 m/s in 4 seconds? __________________________ 12. Jessie runs a distance of 90 ft to make it to first base in 4.5 s. What is her velocity? ____________________ ________________________________________________________________________________________ 13. If Christy is walking her dog and decreases her speed from 4 m/s to 2 m/s in 1.5 s, what is her acceleration? ________________________________________________________________________________________ 14. What is the speed of a train that travels 600 km in 2.5 hours? ______________________________________