Elements Compounds and Elements

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined.

Front

Give an example of a pure substance.

Back

Gold is an example of a pure substance.

Front

What does it mean for a substance to be chemically combined?

Back

It means that the atoms of different elements are bonded together in a fixed ratio.

Front

What is the difference between a compound and a mixture?

Back

A compound has a fixed composition and properties, while a mixture can vary in composition and retains the properties of its individual components.

Front

What is a model in chemistry?

Back

A model in chemistry is a representation of a chemical structure or concept, often used to visualize and understand the arrangement of atoms.

Front

What is the best representation of a compound in a particle model?

Back

A particle model showing different types of atoms bonded together represents a compound.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their properties and atomic structure, helping to predict their behavior.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.