The question asked was, ‘will limestone have a greater loss of weight after being chemically weather compared to the other rocks?’. To figure this out the rocks needed to be regularly weathered with vinegar then weighed a day after to see the effect of the vinegar on them. Also the variables needed to be identified to set up the experiment clearly. The variables were:
Independent Variable: Type of rock (limestone, granite, sandstone, and shale)
Dependent Variable: The weight of the rocks (grams)
Control: Limestone
Constants: Jars that the rocks will be in, dropper that will put the acid on the rocks, scale to weigh the rocks, the rocks (limestone, granite, sandstone, and shale) being used throughout the experiment, area they will be kept in, and type of vinegar.
The Effect at Which Rate Limestone Weathers Compared to Other Rocks 