8th grade Periodic table

Front

How many periods are in the periodic table?

Back

7 periods.

Front

What does the atomic number represent?

Back

The number of protons in the atom of the nucleus.

Front

How is the periodic table arranged?

Back

By the order of atomic number.

Front

What does the number 1.00794 represent in the periodic table?

Back

It stands for the atomic mass.

Front

What are the vertical columns in the periodic table called?

Back

Groups of elements with similar properties.

Front

What is the significance of groups in the periodic table?

Back

Elements in the same group have similar chemical properties.

Front

What is the atomic mass of an element?

Back

The weighted average mass of an element's isotopes.

Front

What is the difference between atomic number and atomic mass?

Back

Atomic number is the number of protons, while atomic mass is the average mass of an element's isotopes.

Front

What are periods in the periodic table?

Back

Horizontal rows that indicate the energy levels of the elements.

Front

What information can you find in a periodic table?

Back

Element names, symbols, atomic numbers, and atomic masses.