Electrons and Ions

The video explains that atoms are the fundamental units of nature, composed of protons, electrons, and neutrons. It discusses how atoms can become ions through the loss or gain of electrons, leading to the formation of ionic bonds. Examples such as sodium chloride and calcium chloride illustrate the occurrence of ionic bonds in nature. The video also covers the formation of ionic crystals and their properties.

What charge do protons carry?

• Negative

• Positive

• No charge

• Neutral

What happens to an atom's charge when it loses an electron?

• It remains unchanged

• It becomes a positive ion

• It becomes a negative ion

• It becomes neutral

What is formed when a positive ion attracts a negative ion?

• Hydrogen bond

• Covalent bond

• Metallic bond

• Ionic bond

Which of the following is an example of an ionic compound?

• Methane

• Carbon dioxide

• Sodium chloride

• Water

What is a common use of calcium chloride?

• Purifying water

• De-icing roads

• Flavoring food

• Making glass