Supplies needed for making play dough: *1 cup of salt *1 cup of flour *1 cup of water *Rolling pin *Food coloring *Bowl
Instructions: 1- Put salt and flour in a deep unbreakable bowl. Mix the dry ingredients thoroughly with hands or a wooden spoon.Slowly add water to which some drops of food coloring have been added.
2- Place the paper cup on your tray & wrap foil around it, folding the foil over the rim of the cup & shaping the remainder foil to resemble a mountain. 3- Place the play dough over the foil. Fold play dough over rim of cup as well.
4-Making the lava mixture: *3 tsps baking soda *1/2 cup white vinegar *Food coloring
After your volcano is built, put the baking soda in the volcano paper cup. Mix the food coloring with the vinegar in a separate cup. Pour the vinegar/food coloring mixture into the volcano & watch the eruption.
What happens? The volcano erupts and releases the lava mixture.
Conclusion: A reaction between the baking soda & vinegar is occurred, producing CO2. Pressure builds up untill the volcano can no longer contain the gas, so it erupts, the gas escapes, & pressure is released.