Atoms, Elements, Molecules, Compounds

Front

What is the smallest unit of matter?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are subatomic particles?

Back

Subatomic particles are the particles that make up an atom, including protons, neutrons, and electrons.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements bond together chemically.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, which can be of the same or different elements.

Front

How do compounds differ from molecules?

Back

Compounds must consist of atoms from different elements, while molecules can consist of the same or different elements.

Front

What is the relationship between atoms and molecules?

Back

Atoms are the building blocks of molecules; molecules are formed when atoms bond together.

Front

What is the difference between a substance and a mixture?

Back

A substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl.

Front

What is the significance of the periodic table?

Back

The periodic table organizes all known elements based on their atomic number and properties, helping to understand their relationships.