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Review Questions

Review Questions. Unit 1 Exam. 1. Where do paper towels go after being used in a lab?. 2. Is tasting chemicals allowed in the lab?. 3. Which of the following is an element? Water Salt Blood Wood Silicon. 4. Which of the following is a mixture? Salt Water Salt water Sugar

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Review Questions

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  1. Review Questions Unit 1 Exam

  2. 1. • Where do paper towels go after being used in a lab?

  3. 2. • Is tasting chemicals allowed in the lab?

  4. 3. • Which of the following is an element? • Water • Salt • Blood • Wood • Silicon

  5. 4. • Which of the following is a mixture? • Salt • Water • Salt water • Sugar • Acetic Acid

  6. 5. • What is the test used to distinguish between a colloid and a suspension?

  7. 6. • What is the test used to distinguish between a solution and a colloid?

  8. 7. • Next to each item write in if it is a substance or a mixture? • Soil • Oxygen • Blood • Milk • Carbon dioxide

  9. 8. • Next to each item classify it as an element, compound, colloid, solution, or suspension. • Aluminum • Aluminum oxide • Vinegar • Milk • Muddy pond water • Salt water

  10. 9. • Identify the following as a physical or chemical property of matter. • Green color • Melting point • Luster • Reacts with acid • Reacts with oxygen • Flammable • density

  11. 10. • Which of the following shows a chemical change? (choose all that apply) • Salt dissolves in water • An apple is cut • Wood rots • Ice melts • Baking soda reacts with vinegar • Zinc is added to copper(II)chloride and a color change occurs

  12. 11. • What is mass?

  13. 12. • What is volume?

  14. 13. • What is density?

  15. 14. • Finish the sentence. • Particles in a solid are packed so close they can only____________________.

  16. 15. • Define a solid.

  17. 16. • Define a liquid

  18. 17. • Define a gas

  19. 18. • What are the factors that determine an object’s state of matter?

  20. 19. • Convert the following units. • 10mL=_____________L • 25dL=___________hL • 300g=___________Mg • 100mm=______________km

  21. 20. • If 1L=1.06qts and 4 qts. = 1 gallon, how many gallons are there from 10L of water?

  22. 21. • Convert the following numbers to scientific notation. • 0.0025 • 5,000 • 1,000,000 • 0.075

  23. 22. • Put the following numbers in long-hand notation. • 1.8 x 105 • 2.3 x10-5 • 3 x108

  24. 23. • What is the equation for density?

  25. 24. • A cylinder has a mass of 125g, a radius of 4 cm, and a height of 10cm. What is its density?

  26. 25. • What is the mass of 460L of water if its density is 1g/mL?

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