Explanation

Stainless steel is a alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties.

The four main types of steel: Carbon Steel, Alloy Steel, Tool Steel and Stainless Steel.

Explanation

• The Bronze Age is a historic period, approximately 3300 BC to 1200 BC,

• **
• The Bronze Age in the Near East is divided into three main periods (the dates are very approximate):
• EBA - Early Bronze Age (c.3500-2000 BC)
• MBA - Middle Bronze Age (c.2000-1600 BC)
• LBA - Late Bronze Age (c.1600-1200 BC)
• ***

Concept Of The Bronze Age
The Bronze Age was characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization.

• Bronze was made by melting tin and copper, and mixing them together.
  **

Explanation

The seismic velocity increases gradually with the depth of the mantle as the pressure increases with depth  and therefore the density increases.

Explanation

Steel is an alloy of iron (Fe) and carbon (C), with small amounts of other elements like manganese, chromium, and vanadium.

It's a mixture of two or more elements, where at least one is a metal, making it an alloy.

Explanation

Overall, the Earth is about 1.59% aluminium by mass

Explanation

Answer:

D

The permanant hardness cannot be removed even if it is boiled. The permanent hardness of  water can be removed by the gun's palm tit method, ion exchange resin method, and cleaning soda method. This means that the permanent hardness of water cannot be removed with boiling water.

Explanation

Dry ice (solid carbon dioxide) is an example of a solid that undergoes sublimation.

Camphor, naphthalene, and ammonium chloride are sublime materials.

Explanation

Overall, the Earth is about 1.59% aluminium by mass

Explanation

• An alloy of Cu - Sn is called Bell metal.
• Bell metal is a specific type of bronze with a higher tin content, commonly used for making bells.

Explanation

Lead is a chemical element.

Symbol Pb  and atomic number 82.

It is a heavy metal that is denser than most common materials.