Elements and the Periodic Table

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Questions and Answers

Which element is not considered a metalloid?

Carbon (C) (correct)
Germanium (Ge)
Silicon (Si)
Arsenic (As)

What does an atomic number represent?

The mass of an atom in atomic mass units
The total number of atoms in a substance
The number of neutrons in an atom
The number of protons in an atom (correct)

Which of the following elements is classified as a gas at room temperature?

Gold (Au)
Iron (Fe)
Aluminum (Al)
Oxygen (O) (correct)

Which of the following pairs of elements are both nonmetals?

Hydrogen (H) and Helium (He) (C) Signup and view all the answers

Which element is commonly found in organic molecules?

Carbon (C) (D) Signup and view all the answers

What information can be quickly determined from the periodic table?

An element's state of matter and classification (D) Signup and view all the answers

Which of the following elements is a metal?

Copper (Cu) (B) Signup and view all the answers

Flashcards

Element

A pure substance that cannot be broken down into simpler substances by chemical means.

Periodic Table

A chart that organizes all known elements by their atomic number, electron configuration, and recurring chemical properties.

Atomic Number

The number of protons in an atom's nucleus, which determines the element's identity.

Element Symbol

A one or two-letter symbol representing an element.

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Organic Molecules

Molecules that make up living organisms.

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Metals

Substances that are typically shiny, malleable, ductile, and good conductors of heat and electricity.

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Metalloids

Elements that have properties of both metals and nonmetals.

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Study Notes

Elements

Elements are substances that cannot be broken down into anything simpler.
Elements are classified as solids, liquids, or gases.
Each element has a unique name, atomic number, and symbol.
There are 118 known elements.
Elements are organized on the periodic table.

Periodic Table

The periodic table organizes elements.
The periodic table helps to quickly find an element's address, atomic number, symbol, name, and atomic mass.
The periodic table can also quickly identify if an element is a metal, nonmetal, or metalloid based on its location.

Examples of Elements

Hydrogen (H), Helium (He) are the lightest elements
Examples of elements found in organic molecules: Hydrogen, Carbon (C), Oxygen (O), Nitrogen (N).
Examples of metals: Sodium (Na), Gold (Au), Silver (Ag), Iron (Fe), Copper (Cu), Aluminum (Al).
Chlorine (Cl) is an element found in salt.
Silicon (Si) is a metalloid found in many products.

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Description

This quiz focuses on the basic concepts of elements and their organization in the periodic table. Test your knowledge on the properties, classifications, and examples of elements, including metals, nonmetals, and metalloids. Perfect for students studying chemistry fundamentals!