Elements, Compounds and Mixtures

Front

What is the definition of a mixture?

Back

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

Front

Give an example of a mixture found in everyday life.

Back

Air is an example of a mixture, as it contains various gases like nitrogen, oxygen, and carbon dioxide.

Front

What are compounds?

Back

Compounds are substances formed when two or more different elements are chemically bonded together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements that are chemically combined.

Front

What are the properties of metals?

Back

Metals are typically good conductors of heat and electricity, malleable, ductile, and have a shiny appearance.

Front

What is a nonmetal?

Back

Nonmetals are elements that generally lack the properties of metals and are poor conductors of heat and electricity.

Front

What is the classification of sulfur?

Back

Sulfur is classified as a nonmetal.

Front

What is the significance of the periodic table in understanding elements and compounds?

Back

The periodic table organizes elements based on their properties and helps predict how they will react with one another to form compounds.

Front

What is a homogeneous mixture?

Back

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

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition, such as a salad.