Unit 2: Measurment, Density, Dimensional Analysis Flashcards
1
Q
Formula for density
A
- D=M/V
- Mass divided volume
- MASS GOES FIRST
2
Q
Triangle to help solve problems
A
- D, M,V triangle
- D x V always
- any other ways you divide
3
Q
Sig Figs: Division and Multiplication rules
A
- Divide or multiple
- Find the number with the lowest amount of Sig Figs
- Move the decimal place and see if it can round, if it can’t, then leave the number as is.
- DON’T DROP DOWN NUMBERS AFTER THE LINE
4
Q
Sig Figs: Add and Subtract
A
- TAKE THE LOWEST NUMBER OF SIG FIGS ON THE RIGHT SIDE OF THE DECIMAL PLACE
- See if it can round
- DO NOT DROP DOWN ANYTHING PAST THE LINE
5
Q
Precision
A
How to close a measurement is to each
6
Q
Accuracy
A
How close a measurement is to an accepted value.
7
Q
When measuring something…
A
- have an unknown digit
- Match sig fig
If- the number is in 10s, then put the measured number in the 10s place
