Mini Volcano in a Jar Materials Needed: A clean glass jar (small to medium size) Baking soda (2–3 tablespoons) White vinegar (½ cup) Dish soap (a few drops) Red food coloring (optional, for lava effect) Spoon or funnel Instructions: Prepare the jar: Place the jar on a tray or plate to catch any overflow. Add baking soda: Spoon 2–3 tablespoons of baking soda into the bottom of the jar. Mix in dish soap: Add a few drops of dish soap—this makes the eruption foamy and bubbly. Add color: If you want