The Periodic Table of Elements

Front

What is the definition of an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What are the characteristics of metals?

Back

Metals are good conductors of heat and electricity, have high melting and boiling points, and are malleable and ductile.

Front

What is the atomic mass of Cadmium?

Back

112.411

Front

What state of matter do most elements in the periodic table exist in?

Back

Most elements in the periodic table are solids.

Front

What percentage of the periodic table is made up of metals?

Back

About 75% of the periodic table is made up of metals.

Front

What are nonmetals and where are they located on the periodic table?

Back

Nonmetals are elements that are poor conductors of heat and electricity, and they are located on the right side of the periodic table.

Front

What is the significance of the atomic number of an element?

Back

The atomic number of an element represents the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

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Front

What are metalloids and what are their properties?

Back

Metalloids have properties that are intermediate between metals and nonmetals; they can conduct electricity better than nonmetals but not as well as metals.

Front

What is the role of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

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