Fall 2024 Exam Review p6

Front

What is a metallic bond?

Back

A metallic bond forms when metal elements have free flowing electrons.

Front

What happens to water when it freezes?

Back

When water freezes, it expands like a growing snowball.

Front

How many core electrons does the Bohr model of an atom have for Helium?

Back

The Bohr model of an atom for Helium has 2 core electrons.

Front

What is an example of mechanical weathering?

Back

Frost wedging is an example of mechanical weathering.

Front

What does a larger atomic radius imply about removing a valence electron?

Back

When an element has a larger atomic radius, it is easier to remove a valence electron.

Front

Define mechanical weathering.

Back

Mechanical weathering is the process of breaking down rocks without changing their chemical composition.

Front

What is the difference between mechanical and chemical weathering?

Back

Mechanical weathering physically breaks rocks apart, while chemical weathering alters the minerals within the rocks.

Front

What is the significance of free electrons in metals?

Back

Free electrons in metals allow for conductivity and the formation of metallic bonds.

Front

Explain the concept of atomic radius.

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

What is frost wedging?

Back

Frost wedging is a mechanical weathering process where water seeps into cracks, freezes, and expands, causing the rock to break apart.