Chalk contains calcium carbonate. What would be the best solution for cleaning a sidewalk that a preschool class covered with smiling suns, flowers, birds, rainbows, and houses using sidewalk chalk?
A)ammonia
B)plain water
C)vinegar
D)paint thinner
E)olive oil

Question

Quizplus · Accepted Answer

Vinegar is acidic and can react with calcium carbonate in chalk, helping to dissolve and remove it from surfaces.

Chalk Contains Calcium Carbonate