Show:
Periodic Table Basics
Metals, Nonmetals, and Metalloids
Element Properties
Families and Reactivity
Special Elements & Fun Facts
100

  • 100: What is a period on the periodic table?

  • Answer: A horizontal row of elements.

100

  • 100: Elements to the left of the stair-step line are called what?

➤ Answer: Metals.

100

  • 100: What does corrosion mean?

  • ➤ Answer: Wearing away of a metal due to a chemical reaction, such as tarnishing.

100

  • 100: What is the most reactive metal family?

➤ Answer: Alkali metals.

100

  • 100: What element bursts into flames when it touches water?

➤ Answer: Sodium.

200

  • 200: What is a group or family on the periodic table?

  • ➤ Answer: A vertical column of elements.

200

  • 200: Elements to the right of the stair-step line are called what?

➤ Answer: Nonmetals.

200

  • 200: What element is the most abundant metal in Earth’s crust?

➤ Answer: Aluminum.

200

  • 200: What is the most reactive nonmetal family?

➤ Answer: Halogens.

200

  • 200: What gas is the most abundant in the atmosphere?

➤ Answer: Nitrogen.

300

  • 300: What does the period number tell you about an element?

➤ Answer: The number of electron energy levels.

300

  • 300: What are elements along the stair-step line called?

➤ Answer: Metalloids.

300

  • 300: What element is known as the element of life?

➤ Answer: Carbon.

300

  • 300: What is the most radioactive series?

➤ Answer: Actinide series.

300

  • 300: What are the Rare Earth Elements separated from the rest of the table called?

➤ Answer: Rare Earth Elements (Lanthanides and Actinides).

400

  • 400: Each period has the same number of what?

➤ Answer: Energy levels.

400

  • 400: Which group of elements is ductile?

➤ Answer: Metals — they can be drawn into a thin wire.

400

  • 400: What element is used to make computer chips?

➤ Answer: Silicon.

400

  • 400: What do all elements in a group have in common?

➤ Answer: The same number of valence electrons.

400

  • 400: Why are the Rare Earth Elements separated from the rest of the table?

➤ Answer: To save space on the periodic table.

500

500: Each family has the same number of what?

➤ Answer: Valence electrons.

500

500: Which group of elements is malleable?

➤ Answer: Metals — they can be hammered into thin sheets.

500

500: What element makes up 21% of the atmosphere?

➤ Answer: Oxygen.

500

500: What do all elements in a period have in common?

➤ Answer: The same number of energy levels.

500

  • 500: Which family of elements includes metals, nonmetals, and metalloids?

➤ Answer: Group 14 (Carbon family).