Wood, steel, ceramic, gold, glass and plastic are all examples of...

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Please choose the correct option for the item made of glass.

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When a machine or a tool is made, the most suitable material must be chosen by considering its properties.

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The main types of materials used in mechanical engineering are metals, polystyrene materials, ceramics and composite materials.

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The most commonly used metals are materials, which can divided into ferrous and non-ferrous.

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An alloy is used to improve some properties of the metals.

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The most commonly used ferrous metals are iron and alloys which use iron.

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A small amount of carbon is added to iron to make iron alloy.

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Non-ferrous metals contain little or no ___.

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The most common non-ferrous metals used in mechanics are ___, zinc, ___ and aluminium.

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Other examples of ___ used in mechanical engineering are ___ and ___.

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PVC or ___ ___ is a type of ___ and is used to insulate ___ and cables.

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___ materials are good ___: hard, ___ and strong, but ___.

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Composite ___ are made up of two or more ___ combined to improve their ___ ___.