U2 Review (Zeph)

Front

What atomic model came after the plum pudding model?

Back

Nuclear model, which describes the atom as having a dense nucleus surrounded by electrons.

Front

What are Groups 3-12 in the periodic table known as?

Back

The Transition metals, which are characterized by their ability to form variable oxidation states and colored compounds.

Front

Who is most known for the planetary atomic model?

Back

Niels Bohr, who proposed that electrons orbit the nucleus in defined paths.

Front

Which of the following is a metalloid? Polonium, Aluminum, Tellurium, Cobalt?

Back

Tellurium, which has properties of both metals and nonmetals.

Front

Which is not a reason why alloys are useful?

Back

They are the purest form of a single metal; alloys are typically mixtures of metals.

Front

Define the term 'metalloid'.

Back

Elements that have properties of both metals and nonmetals, such as silicon and germanium.

Front

What is the significance of the nuclear model of the atom?

Back

It introduced the concept of a dense nucleus, leading to a better understanding of atomic structure.

Front

What are the characteristics of transition metals?

Back

They are good conductors of heat and electricity, have high melting points, and can form various oxidation states.

Front

What is an alloy?

Back

A mixture of two or more elements, where at least one is a metal, designed to enhance certain properties.

Front

Name a common use of alloys.

Back

Alloys like steel are used in construction due to their strength and durability.