Exersive 1.2. Complete the following sentences: 1)Metals are... 2)Metallurgy is... 3)Most metals are... 4)The regular arrangement of atoms in metals... 5)The properties of the metals depend...

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1.- Metals are materials most widely used in industry be­cause of their properties.

2 -. Metallurgy is the study of the production and properties of metals.

3 .- The regular arrangement of atoms in metals gives them a crystalline structure. Irregular crystals are called grains.

4 .- The properties of the metals depend on the size, shape, orientation, and composition of these grains. In general, a metal with small grains will be harder and stronger than one with coarse grains.