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NOTES #4 : Understanding Mass

NOTES #4 : Understanding Mass. Set up your page for Cornell notes. Notes #4-UNDERSTANDING MASS. Draw a line Down the left Side of the page. Set up your page for Cornell notes. Notes #4-UNDERSTANDING MASS. The LEFT side is where you write A QUESTION OR PROMPT.

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NOTES #4 : Understanding Mass

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  1. NOTES #4: Understanding Mass

  2. Set up your page for Cornell notes Notes #4-UNDERSTANDING MASS Draw a line Down the left Side of the page

  3. Set up your page for Cornell notes Notes #4-UNDERSTANDING MASS The LEFT side is where you write A QUESTION OR PROMPT

  4. Set up your page for Cornell notes Notes #4-UNDERSTANDING MASS The RIGHT side is where you right YOUR ANSWER

  5. Notes #4 Understanding Mass1. What is Mass? Mass is: How much matter or “stuff” is in solids, liquids or gases.

  6. 2. What are the units used to measure MASS? Kilogram (kg) Gram (g) Milligram (mg)

  7. 3. What is the tool for measuring mass? • ATRIPLE-BEAM BALANCE (tbb)

  8. 4. What units are used for a Triple-Beam Balance? • Triple-Beam Balances measure mass in GRAMS (g).

  9. 5. How do we use a Triple-Beam Balance? 1) MAKE SURE THE RIDERS ARE SET TO ZERO

  10. Step 2a: • Place object on the pan.

  11. BUT WAIT!!!HOW DO YOU MOVE THE RIDERS??

  12. Step 2b: • Move 100 g slider • Stop when it tips the balance. • Move slider back 1position.

  13. Step 2c: • Move 10 g slider . Stop when it tips the balance, move slider back 1 position Step 2d: • Do the same thing for the 1g slider

  14. 6. How do we read a Triple-Beam Balance? • READ THE RIDERS IN ORDER OF THEIR PLACE VALUE . HUNDREDS PLACE

  15. 6. How do we read a Triple-Beam Balance? • READ THE RIDERS IN ORDER OF THEIR PLACE VALUE . HUNDREDS PLACE 1

  16. 6. How do we read a tbb? • READ THE RIDERS IN ORDER OF THEIR PLACE VALUE 1. 6 Tens place

  17. 6. How do we read a TBB? • READ THE RIDERS IN ORDER OF THEIR PLACE VALUE 1 6 . 3 Ones place

  18. 6. How do we read a TBB? 7 • READ THE RIDERS IN ORDER OF THEIR PLACE VALUE 1 6 3 Tenths place

  19. So, this mouse has a mass of: 7 3 3 3 _____ _____ _____ . _____g This is embarrassing 300 +70 + 3 + 0.3 373.3 g

  20. What would be the mass of the object measured in the picture? _______ ______ _______ . ________ g

  21. What would be the mass of the object measured in the picture? ____4______4______9____ . ____5____ g

  22. COPY THEN ANSWER _______________._____g

  23. __5______4____5___.__2___g

  24. What is the mass? _______________._____g

  25. 491.6 g http://www.ohaus.com/products/education/weblab/TBBread.html

  26. a) What is the total mass? b) Where should the riders be? 10 g 10 g 10 g 1 g 1 g 20 g 5 g 5 g 5 g 5 g 100 g

  27. What is the total mass? Where should the riders be? 10 g 10 g 10 g 172 g 1 g 1 g 20 g 5 g 5 g 5 g 5 g 100 g http://www.ohaus.com/products/education/weblab/TBBread.html

  28. TIME FOR SOME MORE PRACTICE • http://www.ohaus.com/input/tutorials/tbb/TBBread.html FOR EACH PRACTICE PROBLEM, WRITE THE “SHORTCUT” AND ANSWER IN YOUR NOTEBOOK 1.) _______________._____g 2.) _____ _____ _____._____g

  29. 7. What are the largest and smallest masses a Triple-beam can measure? SMALLEST 0.1g ABOUT THE MASS OF A GRAIN OF SAND

  30. 7. What are the largest and smallest masses a Triple-beam can measure? LARGEST 610 g ABOUT THE MASS OF A LARGE CUP OF COFFEE

  31. 7. How do you measure the MASS of a liquid? • Find the mass of empty beaker

  32. 7. How do you find the MASS of a liquid? • Measure and pour liquid into beaker

  33. 7. How do you find the MASS of a liquid? • Find new mass

  34. 8. How do you find the MASS of a liquid? • Subtract mass of empty beaker MASS OF BEAKER + LIQUID (EQUALS) (MINUS) MASS OF BEAKER MASS OF JUST WATER

  35. IN YOUR NOTES, EXPLAIN THE PROCESS FOR FINDING THE MASS OF A LIQUID (YOU MAY SKETCH OR WRITE OR BOTH)

  36. 9. How do you measure the MASS of powders? • FIND THE MASS OF THE PAPER

  37. 9. How do you find the MASS of a powder? • ADD THAT MASS TO THE DESIRED AMOUNT OF POWDER YOU WISH TO MEASURE We need 5g of powder Okay, so the total is 5.5g .5 grams

  38. 8. How do you find the MASS of a Powder? • MOVE THE RIDERS TO THE TOTAL MASS OF THE PAPER + POWDER (in this example that would be 5.5 g

  39. 9. How do you find the MASS of a Powder? • ADD THE POWDER UNTIL THE RIDER POINTER ONCE AGAIN RESTS AT ZERO

  40. IN YOUR NOTES, EXPLAIN WHY THE PROCESS IS DIFFERENT FOR MEASURING POWDERS VS. MEASURING SOLIDS

  41. http://touchspin.touchspin.com/DisplayTBB.php

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