Minerals

Minerals are naturally occurring solid substances with unique chemical compositions. There are about 3000 known minerals on Earth, and they are found even inside the human body. Minerals have various uses; clay is used for pottery, and precious metals like gold are used in jewelry and technology due to their non-reactive and malleable properties. The chemical makeup of minerals determines their properties and uses, such as diamond being the hardest mineral, making it ideal for cutting tools. Essential minerals like sodium chloride and iron are vital for human health, found in foods and used in construction.

What defines a mineral as a naturally occurring substance?

• It is a gas with a unique chemical makeup.

• It is a solid with a unique chemical makeup.

• It is a liquid with a unique chemical makeup.

• It is a plasma with a unique chemical makeup.

Why is gold a popular choice for making jewelry?

• It reacts with moisture and changes color.

• It is soft and can be shaped into various designs.

• It rusts easily when exposed to air.

• It is hard and cannot be shaped easily.

What makes diamond suitable for use on drill tips?

• Its ability to melt at low temperatures.

• Its softness and flexibility.

• Its hardness, allowing it to cut through other substances.

• Its ability to conduct electricity.

Which mineral is essential for human nutrition and is also used as table salt?

• Calcium carbonate

• Magnesium sulfate

• Sodium chloride

• Potassium nitrate

What is a common use of iron besides its dietary importance?

• Creating jewelry

• Coating satellites

• Building bridges and skyscrapers

• Making pottery