Periodic Table 8th Grade

Front

What is a valence electron?

Back

Electrons in the outermost energy level of an atom.

Front

What does the atomic number represent?

Back

The number of protons in an atom.

Front

What happens to atomic radii as you travel down a group in the periodic table?

Back

Atomic radii increases.

Front

How many electrons do most atoms need to be stable?

Back

8 electrons.

Front

Which of the following is not a metal: Li, Y, Al, N?

Back

N (Nitrogen) is not a metal.

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by atomic number, electron configuration, and recurring chemical properties.

Front

What are groups in the periodic table?

Back

Vertical columns that contain elements with similar chemical properties.

Front

What are periods in the periodic table?

Back

Horizontal rows that indicate the number of electron shells in the elements.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle.