Elements, Compounds and Mixtures

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

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

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What distinguishes metals from nonmetals?

Back

Metals are typically shiny, good conductors of heat and electricity, and malleable, while nonmetals are usually dull, poor conductors, and brittle.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

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.

Front

Give an example of a compound.

Back

Water (H2O) is an example of a compound, consisting of two hydrogen atoms and one oxygen atom.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing the relationships between them.

Front

What are the properties of metals?

Back

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