2 SI = International System of Units (standard system of measurement) You must always label measurements with the appropriate unit.Example: 5, 5 what?5cm
3 SI UNITS:Length = meters (m)Volume = liters (L)Mass = kilograms (kg)Time = seconds (s)
4 When you are taking measurements with a….. Ruler…you will need to know the difference between cm and mm.This is measuring LENGTH.
5 You want to read from the bottom of the meniscus. Graduated Cylinder…You want to read from the bottom of the meniscus.The meniscus = the curved line of liquid on a graduated cylinderRead to the nearest .1 (tenth)Example: 25.3mL (the units from a graduated cylinder is milliliters)This is measuring VOLUME
6 You will read to the nearest .1 (tenth). Balance:You will read to the nearest .1 (tenth).You will add up all three arms of measurement to get total mass.Example 132.4g (grams)This is measuring MASS.
7 What does this read?Always start with the biggest and then work down to the smallest.373.3g