You want to see if the size of the chalk affects the reaction to vinegar.
You have three pieces of white chalk that are 3cm, 6cm, and 9cm in length.
You put each of the pieces of chalk in 30mL of white vinegar.
You measure the height of the bubbles every 5 seconds for 60 seconds and record your results in a table.
What is your independent variable (the thing that you are testing)? ______________________________
What is your dependent variable (the thing you are measuring)?
______________________________
What are two constants that you should be sure are the same in all your set-ups to make sure it is a fair test?
______________________________
______________________________
What are some things that cause chemical weathering of rocks?
________________________________________________________
