Chemistry Chapter 7 Lesson 3 Questions

Front

What is an alloy?

Back

A mixture of two or more elements, at least one of which is a metal.

Front

What is the basis of metallic bonds?

Back

Attraction between positive and negative charges.

Front

What is a substitutional alloy?

Back

An alloy where atoms of components are about the same size and can replace each other.

Front

Which of the following is a type of metallic crystal structure?

Back

Body-centered cubic (bcc), Face-centered cubic (fcc), Hexagonal close-packed (hcp) - All of the above.

Front

What happens to metal cations when a metal is subjected to pressure?

Back

They slide past one another.

Front

Define metallic bond.

Back

A type of chemical bond that occurs between metal atoms, characterized by a sea of delocalized electrons.

Front

What is the difference between substitutional and interstitial alloys?

Back

Substitutional alloys have atoms of similar sizes that replace each other, while interstitial alloys have smaller atoms that fit into the spaces between larger atoms.

Front

What is the significance of the body-centered cubic structure?

Back

It is a type of crystal structure where atoms are located at the corners and one atom is at the center of the cube, providing high density.

Front

Explain the term 'ductility' in metals.

Back

Ductility is the ability of a metal to be drawn into wires without breaking.

Front

What is malleability?

Back

Malleability is the ability of a metal to be hammered or pressed into thin sheets without breaking.