Separation of Salt from Ocean Water

What was the main challenge presented by the narrator after collecting ocean water?

• How to measure the water's temperature.

• How to collect more sand.

• How to separate the salt from the water.

• How to filter out the seaweed.

What is the first step in separating the salt from the ocean water?

• Boiling the water.

• Adding more sand.

• Filtering out the sand and seaweed.

• Mixing the water with sugar.

Why is filtering used in the process of separating salt from ocean water?

• To add more salt to the solution.

• To cool down the water.

• To dissolve the salt.

• To remove insoluble substances like sand and seaweed.

What method is used to separate the salt from the water after filtering?

• Freezing the water.

• Evaporating the water.

• Adding vinegar to the solution.

• Using a magnet.

What is left in the beaker after the water is evaporated?

• Only water.

• Only salt.

• Only sand.

• Only seaweed.