GCSE Chemistry - Modern Periodic Table #9

The video explains the periodic table's creation by Mendeleyev, its structure, and how elements are organized by atomic number into periods and groups. It discusses the chemical properties of elements in different groups, including alkali metals, halogens, and noble gases, and highlights the distinction between metals and non-metals. The video also addresses variations in periodic table presentations and provides tips for identifying atomic and mass numbers.

Who is credited with the creation of the periodic table?

• Albert Einstein

• Dmitri Mendeleyev

• Isaac Newton

• Marie Curie

What does the atomic number of an element represent?

• The atomic mass

• The number of protons

• The number of electrons

• The number of neutrons

What is a 'group' in the periodic table?

• A random collection of elements

• A diagonal line of elements

• A vertical column of elements

• A horizontal row of elements

How many electrons do Group Two elements have in their outer shell?

• Two

• Three

• One

• Four

What is a characteristic property of alkali metals?

• They react violently with water

• They are gases at room temperature

• They are unreactive

• They have full outer shells

Which group of elements is known for having full outer electron shells?

• Transition metals

• Noble gases

• Halogens

• Alkali metals

What separates metals from non-metals on the periodic table?

• A dotted line

• A horizontal line

• A zigzag line

• A vertical line