Chemical Combination: Properties of Metals and Non-Metals

The video explains the properties and uses of metals and nonmetals. Metals are good conductors of electricity and heat, can be reshaped, and include examples like aluminum, gold, silver, mercury, iron, cadmium, and magnesium. Aluminum is used for cans and foil, while mercury is used in thermometers. Iron rusts easily, and cadmium is used in batteries. Magnesium is reactive and used in fireworks. Nonmetals, unlike metals, are poor conductors, brittle, and include solids like carbon and sulfur, and gases like hydrogen and nitrogen.

Which of the following metals is known for its excellent electrical conductivity, often used in high-end audio and video cables?

• Cadmium

• Iron

• Gold

• Aluminum

What is a unique property of mercury that makes it useful in thermometers?

• It is a metal that does not conduct electricity.

• It is a liquid at room temperature.

• It is a gas at room temperature.

• It is a solid at room temperature.

Which metal is known for its ability to burn with a bright light, making it useful in fireworks?

• Aluminum

• Cadmium

• Iron

• Magnesium

What is a common characteristic of nonmetals compared to metals?

• They are generally brittle and poor conductors of heat.

• They are excellent conductors of electricity.

• They are malleable and ductile.

• They are shiny and have high melting points.

Which of the following nonmetals is a gas at room temperature?

• Hydrogen

• Phosphorus

• Sulfur

• Carbon