PERIODIC TABLE-ATOM

Front

What is the most common element on Earth?

Back

Oxygen

Front

What is the most common element in Earth's atmosphere?

Back

Nitrogen

Front

Can elements be broken down into simpler substances?

Back

False

Front

What do the constants represent in an experiment?

Back

Factors that remain the same in both experimental and control groups.

Front

In the chemical formula H2O, what does the number 2 represent?

Back

The number of atoms present for that element only.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a chemical symbol?

Back

A one or two-letter representation of an element.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What are groups in the periodic table?

Back

Vertical columns that contain elements with similar chemical properties.