ELEMENTS, COMPOUNDS, AND MIXTURES

Front

What is a pure substance?

Back

A pure substance is either an element or a compound.

Front

What is the chemical symbol for Hydrogen?

Back

H

Front

Which compound is represented by the particle diagram of CO2?

Back

CO2 is carbon dioxide, consisting of one carbon atom and two oxygen atoms.

Front

What does a mixture of atoms represent?

Back

A mixture of atoms consists of different types of atoms that are not chemically bonded together.

Front

What is a mixture of elements?

Back

A mixture of elements contains two or more different elements that are physically combined but not chemically bonded.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is a compound?

Back

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

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 is the chemical formula for table salt?

Back

NaCl, which consists of sodium (Na) and chlorine (Cl) atoms.

Front

What is the difference between homogeneous and heterogeneous mixtures?

Back

Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures have a non-uniform composition.