Mastering The Periodic Table And Its Elements

The video explains Dmitry Mendeleev's creation of the periodic table, which organizes elements by increasing atomic number. It describes the table's structure, including atomic and mass numbers, and the significance of periods and groups. The video highlights the chemical properties and reactivity trends of groups, such as alkali metals and noble gases. It also distinguishes between metals, non-metals, and transition metals, and addresses variations in periodic table presentations.

Who was the Russian chemist responsible for creating the periodic table?

• Isaac Newton

• Marie Curie

• Dmitry Mendeleev

• Albert Einstein

What does the atomic number of an element represent?

• The number of electrons

• The atomic mass

• The number of neutrons

• The number of protons

What is the significance of the group number in the periodic table?

• It indicates the number of protons

• It shows the number of neutrons

• It tells the number of electrons in the outer shell

• It represents the atomic mass

Which group of elements is known for having one electron in their outer shell?

• Group 7

• Group 2

• Group 1

• Group 0

What is a common property of alkali metals?

• They are gases at room temperature

• They are unreactive

• They have full outer shells

• They react violently with water

Which group of elements is known as the noble gases?

• Group 1

• Group 2

• Group 7

• Group 0

What is the trend in reactivity for halogens as you move down the group?

• Reactivity fluctuates

• Reactivity decreases

• Reactivity increases

• Reactivity remains the same

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

• A zigzag line

• A dotted line

• A vertical line

• A horizontal line

What are transition metals?

• Gases

• Metals with full outer shells

• Metals with variable oxidation states

• Non-metals

How can you identify the atomic number in a periodic table?

• It is the larger number

• It is the smaller number

• It is the same as the mass number

• It is always at the top