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Molecules and Compounds Flashcards

Created by

@ReliableDiction

Questions and Answers

What is a molecule?

A tiny group of two or more atoms that are bonded tightly together.

What is a compound?

A substance composed of more than one type of atom bonded together.

What is the formula for water?

H2O

What is the formula for carbon dioxide?

CO2 Signup and view all the answers

What is diamond?

The hardest of all known substances. Signup and view all the answers

What is a chemical reaction?

A process in which atoms of elements or compounds are rearranged to form new substances. Signup and view all the answers

What is combustion?

The type of chemical reaction that occurs whenever a substance reacts rapidly with oxygen. Signup and view all the answers

What is the difference between a mixture and a compound?

A compound cannot be separated into its two different types of atoms by simple physical processes, but a mixture can. Signup and view all the answers

Why is sodium chloride not considered a molecular compound?

Sodium chloride is not composed of individual molecules. The atoms of sodium and chlorine are fitted together in a geometric structure called a crystal. Signup and view all the answers

What type of compound is sodium chloride?

Ionic compound Signup and view all the answers

Study Notes

Molecules and Compounds

A molecule is a tiny group of two or more atoms bonded tightly together.
A compound is a substance composed of more than one type of atom bonded together.

Chemical Formulas

The formula for water is H2O.
The formula for carbon dioxide is CO2.

Properties of Substances

Diamond is the hardest of all known substances.

Chemical Reactions

A chemical reaction is a process in which atoms of elements or compounds are rearranged to form new substances.
Combustion is a type of chemical reaction that occurs when a substance reacts rapidly with oxygen.

Mixtures and Compounds

A compound cannot be separated into its individual types of atoms by simple physical processes, whereas a mixture can.

Ionic Compounds

Sodium chloride is an ionic compound, not a molecular compound.
Sodium chloride is composed of atoms of sodium and chlorine fitted together in a geometric structure called a crystal, rather than individual molecules.

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Description

Dive into the world of molecules and compounds with these flashcards designed to enhance your understanding of basic chemistry concepts. Each card provides essential definitions and formulas to help solidify your knowledge. Perfect for students looking to master the topic quickly!