Properties and Behavior of Metals and Non-Metals

The video discusses the properties of metals and non-metals, highlighting their differences in conductivity, physical appearance, and chemical behavior. Metals are generally conductors, shiny, hard, malleable, and ductile, forming cations. Non-metals are mostly insulators, dull, brittle, and form anions. The video also covers examples of each, such as aluminum, copper, oxygen, and sulfur, and compares their melting and boiling points, noting exceptions like graphite and diamond.

Which of the following is an exception to the general rule that non-metals do not conduct electricity?

• Nitrogen

• Helium

• Graphite

• Sulfur

Which metal is commonly used in electrical wiring due to its excellent conductivity?

• Copper

• Aluminum

• Iron

• Gold

What property allows metals to be hammered into thin sheets?

• Brittleness

• Conductivity

• Malleability

• Ductility

Which of the following is a reducing agent?

• Chlorine

• Oxygen

• Sulfur

• Aluminum

What type of ions do non-metals typically form?

• Cations

• Positive ions

• Anions

• Neutral ions

Which element has a melting point of 842 degrees Celsius?

• Sodium

• Calcium

• Sulfur

• Tungsten

What is the melting point of iodine, a non-metal that is solid at room temperature?

• 98 degrees Celsius

• 115 degrees Celsius

• 114 degrees Celsius

• 30 degrees Celsius

Which of the following is a network covalent solid with a high melting point?

• Helium

• Graphite

• Gallium

• Sulfur

Which metal can melt in your hand due to its low melting point?

• Sodium

• Mercury

• Gallium

• Iron

What is the state of mercury at room temperature?

• Gas

• Solid

• Liquid

• Plasma