Elements, Compounds and Mixtures

Front

What is a compound?

Back

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

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means. They consist of only one type of atom.

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

True or False: All compounds are molecules.

Back

True. All compounds are molecules because they consist of two or more atoms bonded together.

Front

True or False: Mixtures can be separated by physical methods.

Back

True. Mixtures can be separated using techniques such as evaporation, filtration, and magnetic separation.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed from two or more elements that are chemically bonded, while a mixture is a combination of substances that are not chemically bonded.

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound, formed by the sharing or transfer of electrons.

Front

What is an example of a compound?

Back

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

Front

What is an example of a mixture?

Back

Salad is an example of a mixture, as it contains various ingredients that are not chemically bonded.

Front

What are the three types of mixtures?

Back

The three types of mixtures are homogeneous mixtures (uniform composition), heterogeneous mixtures (distinct components), and colloids (intermediate properties).