Metallurgy is the study of making machinery from metals forming ionic bonds the chemical and physical behavior of metallic elements turning other metallic elements into gold

Option (c) is the correct answer.

Explanation:

Metallurgy is defined as the branch of science in which an individual gets to known about the properties of metals along with their production and purification.

These properties of metals include both physical and chemical properties. Hence, they help in knowing the chemical and physical behavior of metallic elements.

Therefore, we can conclude that metallurgy is the study of the chemical and physical behavior of metallic elements.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true