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Compounds and Molecules Quiz

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Questions and Answers

What is the defining characteristic of a molecule of a compound?

It is made in laboratories

It occurs naturally in nature

It consists of atoms of the same kind

It consists of more than one kind of atoms (correct)

What is the composition of a molecule of an element?

It consists of atoms of the same kind (correct)

It consists of more than one kind of atoms

It is made in laboratories

It occurs naturally in nature

How are the atoms of different elements in the molecule of a compound combined?

In a random order

In equal proportions

In a definite ratio (correct)

In an arbitrary ratio

Which of the following is an example of a man-made compound?

Ethanol Signup and view all the answers

What is the most common composition of compounds on Earth?

Consists of more than one kind of atoms Signup and view all the answers

What is the classification of ammonia as a molecule?

Polyatomic molecule (binary compound) Signup and view all the answers

How is water classified based on the combination of different elements?

Triatomic molecule (binary compound) Signup and view all the answers

What is the classification of carbon dioxide based on the combination of different elements?

Triatomic molecule (binary compound) Signup and view all the answers

How is ethanol classified based on the combination of different elements?

Polyatomic molecule (ternary compound) Signup and view all the answers

What is the most obvious difference between an element and a compound?

An element cannot be broken down into other substances by chemical means whereas a compound can be broken down into other substances by chemical means. Signup and view all the answers

Study Notes

Characteristics of Molecules

The defining characteristic of a molecule of a compound is the combination of two or more different elements.
The composition of a molecule of an element, on the other hand, consists of only one type of element.

Combination of Atoms

Atoms of different elements in the molecule of a compound are combined through chemical bonds.

Examples of Compounds

Nylon is an example of a man-made compound.
Water (H2O) is a natural compound with a combination of hydrogen and oxygen elements.
Ammonia (NH3) is a compound classified as a nitrogen-hydrogen molecule.
Carbon dioxide (CO2) is a compound classified as a carbon-oxygen molecule.
Ethanol (C2H5OH) is a compound classified as a carbon-hydrogen-oxygen molecule.

Difference between Elements and Compounds

The most obvious difference between an element and a compound is that an element consists of only one type of atom, whereas a compound consists of two or more different elements.

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Description

Test your knowledge of compounds and molecules with this quiz! Learn about the differences between molecular elements and molecular compounds, and understand how atoms of different elements combine to form compounds.