WONDER #2488: How Do You Purify Water?

Question 1 of 3

Many purification plants use the chemical ________________ to disinfect water.

  1. baking powder
  2. sodium chloride
  3. carbon dioxide
  4. chlorine

Question 2 of 3

According to the World Health Organization, how many people did not have access to clean drinking water at home in 2017?

  1. 1 million
  2. 2.1 billion
  3. 500,000
  4. 7.6 billion

Question 3 of 3

This Wonder was mostly about...

  1. how LifeStraw can help bring clean water to more people.
  2. how water is purified so that it’s clean enough for people to drink.
  3. which chemicals are best for making water taste better.
  4. which basic need is most important.

Check your answers online at https://www.wonderopolis.org/index.php/wonder/how-do-you-purify-water.