Periodic Table Unit Test Review

Front

Where are electrons located in an atom?

Back

Electrons are located orbiting the nucleus of the atom.

Front

Into which group of elements is Radium classified?

Back

Radium is classified as a metal.

Front

What is the atomic number for Gallium?

Back

The atomic number for Gallium is 31.

Front

What type of matter is represented by a compound?

Back

A compound is a type of matter formed when two or more elements are chemically bonded together.

Front

How many phosphorus atoms are in the chemical formula P4?

Back

There are 4 phosphorus atoms in the chemical formula P4.

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 is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

What is the significance of the atomic number?

Back

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

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a substance using symbols for its constituent elements.