1 / 53

Flashcards for Unit 1

Flashcards for Unit 1. Matter. Anything that has mass & occupies space. 7. How many fundamental units in the SI system?. Fundamental or Base Unit. Physical quantity that must be measured. It cannot be calculated. Derived Unit. A unit defined as a combination of fundamental units.

brendamarshall
Download Presentation

Flashcards for 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. Flashcards for Unit 1

  2. Matter Anything that has mass & occupies space.

  3. 7 How many fundamental units in the SI system?

  4. Fundamental or Base Unit Physical quantity that must be measured. It cannot be calculated.

  5. Derived Unit A unit defined as a combination of fundamental units.

  6. Unit of mass Kilogram Fundamental Unit

  7. Unit of time Second Fundamental Unit

  8. Unit of length Meter Fundamental Unit

  9. Unit of temperature Kelvin Fundamental Unit

  10. Space or Capacity Volume Derived Unit

  11. Metric Unit of Volume: 10 cm X 10 cm 10 cm Liter Derived Unit

  12. 1000 cm3 = 1 Liter ? cm3 = 1 Liter Derived Unit

  13. 1000 mL = 1 Liter ? milliliter = 1 Liter Derived Unit

  14. 1 mL = 1 cm3 ? milliliter = 1 cm3 Derived Unit

  15. 1 kilogram What is the mass of 1 liter of pure H2O? Mass/Volume relationship

  16. 1 gram What is the mass of 1 cm3 of pure H2O? Mass/Volume relationship

  17. 273 K Freezing Point of water in the Kelvin scale. Physical Constant

  18. 373 K Boiling Point of water in the Kelvin scale. Physical Constant

  19. 0 C Freezing Point of water in the centigrade scale. Physical Constant

  20. 100 C Boiling Point of water in the centigrade scale. Physical Constant

  21. Another name for freezing point. Ice / water equilibrium

  22. Another name for boiling point. Steam / water equilibrium

  23. 100 cm = 1 meter ? cm in 1 meter Conversion Fact

  24. 1000 mm = 1 meter ? mm in 1 meter Conversion Fact

  25. 1000 m = 1 kilometer ? m in 1 km Conversion Fact

  26. Mass / Volume Density

  27. Describes how matter is packed into space. Density

  28. grams / cm3 for solids grams / ml for liquids Units of Density

  29. M D V Density

  30. How close a measured value is to an accepted value. Accuracy

  31. How close a series of measurements are to one another. Precision

  32. Low Scatter High Precision

  33. Measured value – Accepted value x 100% Accepted value Percent Error Table T, reference tables

  34. K = C + 273 C to K Table T, reference tables

  35. The number is written as a product of 2 numbers: - a number between 1 & 10 - a power of 10 Scientific Notation

  36. Negative exponent so the number is between 0 and 1: 0.002 2 X 10-3

  37. Positive exponent so the number is greater than 1: 500 5 X 102

  38. All known digits plus 1 estimated digit. Significant Figures

  39. Decimal Present – Pacific side Start counting at 1st nonzero # 5400.145 cm 7 sig figs

  40. Decimal Present – Pacific side Start counting at 1st nonzero # 0.0175 g 3 sig figs

  41. Decimal Absent – Atlantic side Start counting at 1st nonzero # 4855 g 4 sig figs

  42. Decimal Absent – Atlantic side Start counting at 1st nonzero # 4000 mm 1 sig fig

  43. Answer has same number of decimal places as the addend with the least number of decimal places. Significant Figures: Rule for Addition and Subtraction

  44. 77.2 cm is correct! 28.0 cm 23.538 cm 25.68 cm But what do you report? + 77.218 cm

  45. Answer has same number of significant figures as the factor with the least number of significant figures. Significant Figures: Rule for Multiplication & Division

  46. 78 m2 is correct! 24 m X 3.26 m = 78.24 m2 But what do you report?

  47. c) 2.7 g/cm3 d) 0.36 cm3/g • 2.749 g/cm3 • 2.75 g/cm3 3 sig figs An aluminum cube has a mass of 4.75 grams. The dimensions of the cube are 1.2 cm X 1.2 cm X 1.2 cm. What is the density of the cube? 2 sf “Volume” = 1.728 cm3

  48. 58.5 grams of NaCl = 1 mole. Calculated from P.T. 43.875 g 1 mole = 0.75 moles 58.5 grams  0.8 M 0.75 moles/1. Liter = 0.75 M 5 sig figs 1 sig fig A solution contains 43.875 grams of NaCl dissolved in 1. Liter of H2O. What is the molarity expressed to the correct sig figs?

  49. 2 columns plus title independent variable – controlled by scientist (column 1) dependent variable – measured variable (column 2) Data Table

  50. 2 axes plus title independent variable – controlled by scientist (column 1) – GOES on X-AXIS dependent variable – measured variable (column 2) – GOES on Y-AXIS Graph

More Related