Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
When you take any measurement there will always be some amount of UNCERTAINTY. How do we manage this uncertainty? |
Record AS MANY DIGITS as possible then make one last guess; all these digits are called SIGNIFICANT FIGURES (SIGFIGS) Sigfigs include the digits you can see along w/the last guess |
Measuring a book in between hash marks on a ruler |
|
|
What has an unlimited number of sigfigs? |
Exact Quantities or Conversion Factors |
|
|
|
Which digits are significant? |
All non zero digits |
|
|
|
Are zeros significant? |
Zeros may or may not be significant, depending on the rules for zero |
|
|
|
When are zeros significant?
|
○Zeros between nonzero digits are significant ○Zeros that fall at the end of a number to the right of the decimal are significant |
|
|
|
When are zeros NOT significant?
|
○Zeros to the left of the first nonzero digit are not sugnificant ○ Zeros at the end of a number with no decimal are not significant |
|
|
|
What is the rule for determining sigfigs in calculations using Multiplication/Division? |
When performing these operations, you must record the answer to the same number of sigfigs as the data w/the least number |
|
|
|
What is the rule for determining sigfigs in calculations using Addition/Subtraction? |
When performing these operations you must record the answer to the same number of decimal places as the data w/the least number of decimal places
Result must be rounded to the same number of decimal places as the value of the fewest decimal places |
|
|
|
What is Scientific Notation? |
A device used to express very large or very small numbers easily |
|
|
|
Where do you move the decimal point when using Scientific Notation? |
Move the decimal point in the original number so that it is located after the first nonzero |
|
|
|
How do you determine the sign on the exponent when using Scientific Notation? |
○ Moved Right --> Negative Exponent ○ Moved Left <--- Positive Exponent |
|
|
|
In the Metric System: Length=__________ Volume=_________ Mass=____________ Temperature=_______ |
Length= Meter Volume= Liter Mass= Gram Temperature= Celcius/Kelvin |
|
|
|
What is an acronym for remembering the Metric System? |
K ing - Kilo H enry - Hecta D oesnt - Deka U nderstand - Unit: Liter, Gram, Meter D oing - - - - - - - Deci C onversions - - - Centi O f M etric - - - - - - - - - - Milli |
|
|
|
What is the formula for density? |
D = M/V = Grams/Milliliters |
|
|
|
How many Sigfigs will be in the final answer? 1200 + 6.34 ______________ 1206.34 |
= 1206. 4 sigfigs The answer contains the same # of Sigfigs as the least precise measurement |
|
|
|
How many Sigfigs are in 0.0404? |
3 sigfigs |
|
|
|
How many sigfigs in 5.50 x 10`3 |
3 sigfigs |
|
