1 / 52

Chemistry Unit 1

Chemistry Unit 1. Question 1 - 10. What are the vertical columns on the periodic table called?. Answer 1 – 10. Groups/Families. Question 1 - 20. What is the name for the branch of chemistry that focuses on the study of carbon compounds?. Answer 1 – 20. Organic Chemistry. Question 1 - 30.

drinkard
Télécharger la présentation

Chemistry Unit 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemistry Unit 1

  2. Question 1 - 10 • What are the vertical columns on the periodic table called?

  3. Answer 1 – 10 • Groups/Families

  4. Question 1 - 20 • What is the name for the branch of chemistry that focuses on the study of carbon compounds?

  5. Answer 1 – 20 • Organic Chemistry

  6. Question 1 - 30 • How many periods are on the Periodic Table?

  7. Answer 1 – 30 • 7 Periods

  8. Question 1 - 40 What are the names of the following elements? • Na • K • W • As

  9. Answer 1 – 40 Na → Sodium K → Potassium W → Tungsten As → Arsenic

  10. Question 1 - 50 • What are the horizontal rows on the periodic table called?

  11. Answer 1 – 50 • Periods

  12. Question 2 - 10 • How many grams are in 250 mg?

  13. Answer 2 – 10 • 0.250 g

  14. Question 2 - 20 • How many mL are in 1 kL?

  15. Answer 2 – 20 • 1,000,000 mL

  16. Question 2 - 30 • What is the density of an object that has a mass of 15g and a volume of 7.5mL?

  17. Answer 2 – 30 • 2 g/mL

  18. Question 2 - 40 • What is the volume of an object that has a mass of 25 g and a density of 50 g/mL?

  19. Answer 2 – 40 0.5 mL

  20. Question 2 - 50 The density of tin is 15.65 g/cm. What is the mass of a block of tin that measures 2.00 cm x 8.00 cm x 4.50 cm?

  21. Answer 2 – 50 • 1,126.8 g

  22. Question 3 - 10 • Draw a target to show measurements that are precise but not accurate.

  23. Answer 3 – 10

  24. Question 3 - 20 • Define accuracy.

  25. Answer 3 – 20 • A measure of how clue a measurement is to the “true” value.

  26. Question 3 - 30 • A student measure the mass of an object to be 2.54 g. The true mass of the object is 2.97 g. Calculate the student’s percent error?

  27. Answer 3 – 30 • 14.49 %

  28. Question 3 - 40 • A student makes 5 measurements for the length of an object. The measurements are 2cm, 2.3 cm, 1.9 cm, 2.1 cm, and 2 cm. The actual length of the object is 2 cm. Describe the student’s accuracy and precision.

  29. Answer 3 – 40 • The student is both precise (the measurements are close together) and accurate (the measurements are close to the true value).

  30. Question 3 - 50 • Define precision.

  31. Answer 3 – 50 • A measure of how close a set of measurements are to one another.

  32. Question 4 - 10 List a physical property of the object shown below.

  33. Answer 4 – 10 Liquid Shiny Pourable etc.

  34. Question 4 - 20 • Is burning paper a physical or chemical change? Explain your choice.

  35. Answer 4 – 20 • Chemical change because a new substance is being created.

  36. Question 4 - 30 Which of the following is a chemical property? • Freezing point • Melting point • Hardness • Ability to react with water

  37. Answer 4 – 30 • Ability to react with water.

  38. Question 4 - 40 Which of the following is a chemical change? • Ripping paper • Freezing water • Cooking food • Melting ice

  39. Answer 4 – 40 • Cooking food

  40. Question 4 - 50 • Define intensive and extensive properties.

  41. Answer 4 – 50 Intensive property → Depends on the type of matter Extensive property → Depends on the amount of matter

  42. Question 5 - 10 • Define heterogeneous mixture and give one example.

  43. Answer 5 – 10 A combination of two or more substances that does not have a uniform composition. Example: Chicken soup Salad Oil and Water

  44. Question 5 - 20 • Define homogenous mixture and give one example.

  45. Answer 5 – 20 A combination of two or more substances that has a uniform composition. Example: Salt water Koolaid

  46. Question 5 - 30 • In how many physical states does water commonly exist? List and describe the phases.

  47. Answer 5 – 30 3 Solid → Ice Liquid → Water Gas → Water Vapor

  48. Question 5 - 40 • What is another name for a homogeneous mixture?

  49. Answer 5 – 40 • Solution

More Related