Chemical Change Copy Copy Copy Copy Copy Copy
You'll be identifying chemical changes in this lab. A chemical change changes the identity of a material. Burning is a chemical change.
Some analog measurements are listed below.
Length: meter stick
Mass: triple-beam balance
Force: spring scale
Volume: graduated cylinder
In this lab, you'll measure distance, mass, temperature, force, and volume.
Any measurement consists of two parts:
the value and
If you report a length as being 1.7, no one will know whether it's the size of a bacterium or a continent. Don't leave out the units.
Accuracy tells how good your measuring device is.
Does it measure correctly?
Precision is all about repeating measurements and getting the same value.
Try to measure the height of someone who won't stand still.