Podcast
Questions and Answers
What happens to the atomic size of elements as you move down a group in the periodic table?
What happens to the atomic size of elements as you move down a group in the periodic table?
How does the reactivity of nonmetals change across a period from left to right?
How does the reactivity of nonmetals change across a period from left to right?
Which of the following properties is NOT associated with metals?
Which of the following properties is NOT associated with metals?
What does the Periodic Law state about the properties of elements?
What does the Periodic Law state about the properties of elements?
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Which of the following is a characteristic of noble gases?
Which of the following is a characteristic of noble gases?
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Which statement best describes metalloids?
Which statement best describes metalloids?
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What is one of the physical properties of nonmetals?
What is one of the physical properties of nonmetals?
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Which change occurs in metallic properties as you move from left to right across a period?
Which change occurs in metallic properties as you move from left to right across a period?
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Study Notes
Periodic Table Overview
- The periodic table's symbols often come from Latin names or places. Elements are typically represented by two letters, with the first capitalized. Examples include cobalt (Co) and carbon monoxide (CO).
Families/Groups
- The table is organized into 18 groups, or families. Elements in the same group share similar chemical properties.
- Moving down a group generally increases atomic size and reactivity. (Hydrogen is an exception)
Periodic Properties
- Periodic Law: The properties of elements are periodic functions of their atomic number.
- Periods: Horizontal rows, adding a new electron shell as you move down.
- Reactivity Trends: Nonmetal reactivity generally increases across a period from left to right, but the noble gases are nonreactive. Metal reactivity increases down a group and to the left in a period.
- Atomic Size: Atomic size increases down a group and decreases across a period.
- Metallic Properties: Generally decrease in metallic properties as you move across a period from left to right.
Metals
- Properties: Shiny, good conductors of heat and electricity, malleable, ductile, and high density. They tend to lose electrons in reactions.
- Location: Found mainly in the center and left side of the periodic table.
Nonmetals
- Properties: Dull, poor conductors, brittle, and lower density than metals. They tend to gain electrons in reactions.
- Location: Found on the upper right side of the periodic table.
Metalloids
- Properties: Intermediate properties; some characteristics of both metals and nonmetals. May be ductile or brittle, and sometimes conduct electricity.
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Description
Explore the structure and trends of the periodic table through this quiz. Learn about element families, groups, and the periodic law that governs their properties. Test your knowledge on atomic size, reactivity trends, and metallic properties in a fun and engaging way.
