Salt and chalk in water - Stock Image - C001/0718 - Science Photo Library
Chemical reaction of chalk in water - YouTube
Freeze-Thaw Weathering : Fizzics Education
Rock Science Project: Frozen, Sponge & Bubbling Rock Cycle Experiments
Chalk Experiment By Emily Williams. What is Vinegar? Vinegar is acid. Acid slowly reacts chemically with the chalk. An acid is a substance that increases. - ppt download