Chlorine

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/chlorine

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the chemical symbol?Cl
2. What is the atomic number?17
3. What color is chlorine gas?Chlorine gas looks pale yellow-green.
4. Why is chlorine used to clean swimming pools?It kills harmful germs and keeps the water safe to swim in.

Halogen: A group of highly reactive nonmetallic elements in Group 17 of the periodic table.
Oxidising Agent: A substance that causes oxidation by accepting electrons from another substance.
Electronegativity: A measure of the tendency of an atom to attract a bonding pair of electrons.
Chloralkali Process: The industrial process for the electrolysis of sodium chloride solution to produce chlorine, hydrogen, and sodium hydroxide.