Compounds and Mixtures

Front

What is an element?

Back

An element is a pure substance that consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different atoms are chemically combined, such as H2O, NaCl, and CO2.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded, allowing them to retain their individual properties.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout, such as elements and compounds.

Front

What is a subscript in a chemical formula?

Back

A subscript is a number in a chemical formula that indicates the number of atoms of the element present in the compound.

Front

What is the difference between an element and a compound?

Back

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

Front

Can a mixture be separated into its components?

Back

Yes, mixtures can be separated into their individual components by physical means, such as filtration or distillation.

Front

What is an example of a pure substance?

Back

Gold is an example of a pure substance.

Front

What are the two main types of substances in chemistry?

Back

The two main types of substances are pure substances (elements and compounds) and mixtures.

Front

What is the significance of chemical formulas?

Back

Chemical formulas provide information about the types and numbers of atoms in a compound.