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Flashcards for Unit 1.

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Presentation on theme: "Flashcards for Unit 1."— 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 What is the mass of 1 liter of pure H2O?
1 kilogram What is the mass of 1 liter of pure H2O? Mass/Volume relationship

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

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

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

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

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

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

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

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

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

37 All known digits plus 1 estimated digit.
Significant Figures

38 5400.145 cm Decimal Present – Pacific side
Start counting at 1st nonzero # cm 7 sig figs

39 0.0175 g Decimal Present – Pacific side
Start counting at 1st nonzero # g 3 sig figs

40 4855 g Decimal Absent – Atlantic side Start counting at 1st nonzero #
4 sig figs

41 4000 mm Decimal Absent – Atlantic side Start counting at 1st nonzero #
1 sig fig

42 Significant Figures & Addition and Subtraction
Answer has same number of decimal places as the addend with the least number of decimal places. Significant Figures & Addition and Subtraction

43 77.2 cm is correct! cm cm 25.68 cm But what do you report? + cm

44 Significant Figures & Multiplication & Division
Answer has same number of significant figures as the factor with the least number of significant figures. Significant Figures & Multiplication & Division

45 78 m2 is correct! 24 m X 3.26 m = m2 But what do you report?


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