Exploring Atomic Structure and the Periodic Table

This video tutorial provides an in-depth exploration of the periodic table, covering its organization by atomic number and chemical properties. It explains the significance of groups and periods, detailing how elements in the same group share valence electrons and similar chemical properties. The tutorial also introduces special group names like alkali metals, halogens, and noble gases, and discusses the classification of elements into metals, non-metals, and metalloids. Finally, it offers a step-by-step guide on drawing Bohr models to represent atomic structure.

What does the periodic table organize elements by?

• Density and melting point

• Atomic number and chemical properties

• Color and reactivity

• Atomic mass and physical state

Which group contains elements with one valence electron?

• Group 1

• Group 13

• Group 18

• Group 2

What are the most reactive metals called?

• Alkaline earth metals

• Transition metals

• Halogens

• Alkali metals

Which group is known as the noble gases?

• Group 1

• Group 17

• Group 2

• Group 18

What do all elements in the same period have in common?

• Same atomic number

• Same chemical properties

• Same number of valence electrons

• Same number of energy levels

How many electrons can the first energy level hold?

• 4

• 2

• 8

• 18

What type of elements are good conductors of heat and electricity?

• Non-metals

• Metalloids

• Metals

• Noble gases

Tags

NGSS.MS-PS3-3

Which elements are typically gases or dull brittle solids?

• Non-metals

• Transition metals

• Metals

• Metalloids

What is the first step in drawing a Bohr model?

• Draw the nucleus

• Determine the number of neutrons

• Draw the electron shells

• Figure out the number of protons

How many energy levels does nitrogen have?

• 4

• 3

• 2

• 1