AIM: Why is knowing calibration important TOPIC: Calibration AIM: Why is knowing calibration important DO NOW: CONVERT 10 km to _______m 0.4 g to ______kg 560 mL to ______kL .009 cm to _____ mL 3

What is Calibration? Calibration of measuring device is distance between two closest lines (Not distance between two closest #!)

Not all graduated cylinders are calibrated the same way

? capacity of large graduated cylinder? ? calibration of large graduated cylinder? 1000 ml 10 ml

source Calibration = ? 1 ml

Calibration = ? 1 ml

Calibration = ? 1 ml

Calibration = ? 0.2 ml

Here are some other pieces of lab equipment Here are some other pieces of lab equipment. Can you figure out the calibration of each?

meter stick: two closest lines are 1 millimeter apart

Calibration = ? 50 ml

Calibration = ? 25 ml

This is a quadruple beam balance

What’s the calibration? 0.01 gram

This is a buret The calibration is: 0.1 ml [unlike graduated cylinder, numbers go down, so you read downwards] The calibration is: 0.1 ml

calibration important? So why is knowing calibration important? When you measure you measure to one place past the calibration. You told me the calibration was 1 ml, so the answer has to go to 1.0, 1.1, 1.2, 1.3, etc