1. Tools of a Scientist

2. Things we will commonly measure:
Mass—amount of matter in substance
Volume—amount of space substance takes up
Length—linear measurement of something end to end
Temperature—average kinetic energy of particles in a substance

3. SI Units
SI stands for System international, which is French.

4. Metric system prefixes

7. Significant digits
A correct reading of scientific instruments is to read to the most precise graduation of instrument, then estimate one further.

8. Tools for measurement
For mass: Electronic balance. Last digit is estimated digit. Therefore you only write down what you see. (that is why it changes)

9. Volume use a graduated cylinder
First determine the most accurate reading you can make, then read 1/10 past that reading. This is your estimated uncertainty. So a graduated cylinder that has a precision of 1 mL, the uncertainty would be +/- .1mL

10. Then estimate past smallest reading
smallest measurement 1 mL, so estimate to .1mL 16.4 mL
Smallest measurement is .1 mL so estimate to .01 mL
3.80mL
Smallest measurement is .2mL, so you would estimate to .02mL
I would read this as 6.75mL. Just do .05mL or .00 mL on these.
Estimated uncertainty

11. Meniscus
Water is “sticky” and creeps up the sides of the glass, leaving a curve in the surface
Therefore you have to get to eye level and read it.

12. Yes!

13. How much in each?

14. Measurement

15. Temperature scales