Nat 5 - Periodic Table and Atomic Structure

Front

How are elements in the Periodic Table arranged?

Back

Elements in the Periodic Table are arranged in order of increasing atomic number.

Front

What can the Periodic Table determine about an element?

Back

The Periodic Table can be used to determine whether an element is a metal or non-metal.

Front

What are groups in the Periodic Table?

Back

Groups are columns in the Periodic Table containing elements with the same number of outer electrons, indicated by the group number.

Front

Why do elements within a group have similar chemical properties?

Back

Elements within a group share the same valency and have similar chemical properties because they have the same number of electrons in their outer energy levels.

Front

What is the structure of an atom?

Back

An atom has a nucleus, containing protons and neutrons, and electrons that orbit the nucleus.

Front

What is the charge of protons, neutrons, and electrons?

Back

Protons have a charge of one-positive, neutrons are neutral, and electrons have a charge of one-negative.

Front

What is the mass of protons, neutrons, and electrons?

Back

Protons and neutrons have an approximate mass of one atomic mass unit, and electrons have virtually no mass.

Front

What does the atomic number represent?

Back

The number of protons in an atom is given by the atomic number.

Front

What is true about the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons.

Front

How is the mass number of an atom calculated?

Back

The mass number of an atom is equal to the number of protons added to the number of neutrons.