ELD intro to atoms review

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together.

Front

What is an element?

Back

An element is a pure substance that consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different types of atoms bond together chemically.

Front

What does atomic mass represent?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the atomic number?

Back

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

Front

What is the atomic mass of Neon?

Back

The atomic mass of Neon is 20.18.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout.

Front

What is the difference between a mixture and a compound?

Back

A mixture contains two or more substances that are not chemically bonded, while a compound consists of two or more atoms that are chemically bonded.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, which can be of the same or different elements.

Front

What is the significance of the periodic table?

Back

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