A sample of iodine is easiest to ship as a powder because it is

Question

, making it easy to break into small pieces.

Helium is less
than the elements that make up the air we breathe, so a balloon filled with helium will float in air.

Plastic is a compound of nonmetallic elements, so its
properties make it a popular coating for electric wires to prevent the current from escaping.

Answer 1

Let's fill in the blanks based on the context given:

1. A sample of iodine is easiest to ship as a powder because it is brittle, making it easy to break into small pieces.

2. Helium is less dense than the elements that make up the air we breathe, so a balloon filled with helium will float in air.

3. Plastic is a compound of nonmetallic elements, so its insulating properties make it a popular coating for electric wires to prevent the current from escaping.