Visit this website and locate the element chlorine, whose
chemical symbol is Cl. Click on the square to read about
the element.
Why is it important to use caution when handling
chlorine?

Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. In fact, chlorine was used as a war gas in 1915.

Explanation:

Chlorine is very toxic if inhaled. The liquid also burns the skin.

Explanation:

The correct answer (sample response) is:

If a magnetic or electric field is present, materials that generate these fields will interact by attracting or repelling each other because of their magnetic or electric properties.

The statement is a hypothesis about the effects of magnetic and electric fields. Use the format of "if...then...because..." and be sure to answer the lesson question: "How can magnetic and electric fields be demonstrated?"

Include the following in your hypothesis:

• The "if" part of your hypothesis refers to the presence of an electric or magnetic field.

• The "then" part of your hypothesis refers to a measurable attraction or repulsion.

• The "because" portion of your hypothesis connects the ideas of electromagnetic properties.