0
Still curious? Ask our experts.
Chat with our AI personalities
Rafa
Beau
Lao
Add your answer:
Earn +20 pts
How do you separate suspension of chalk in water?
Filtration would separate the water, leaving the chalk particles behind.
How do you separate a suspension of chalk in water?
Filtration would separate the water, leaving the chalk particles behind.
Is sand and chalk a homogeneous mixture?
Sand and chalk are not a homogeneous mixture because they do not have a uniform composition, meaning their components are visibly distinguishable from each other. Sand consists of larger particles like silica, while chalk is composed of calcium carbonate.
Explain Why blackboards are not scratched by chalk but by the sand embedded in the chalk?
Chalk is mostly made of calcium carbonate, which is softer than the materials in blackboards. When the chalk rubs against the blackboard, it does not scratch it because of its softer nature. However, chalk often contains trace amounts of sand or other harder impurities that can cause scratching on the blackboard surface.
By which process can you separate a mixture of naphthalene and chalk powder?
Sublimation can be used to separate naphthalene from chalk powder. Naphthalene sublimes at room temperature, while chalk powder does not, allowing for the separation based on this difference in physical properties.
