Atoms, Elements, Molecules, Compounds

Front

What is the definition of an atom?

Back

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

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically bond together.

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

What is a compound?

Back

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

Front

What is the significance of chemical bonds in molecules?

Back

Chemical bonds determine the structure and properties of molecules, influencing how they interact with other substances.

Front

What type of bond is present in water (H2O)?

Back

Water (H2O) contains polar covalent bonds between hydrogen and oxygen atoms.

Front

What is the space-filling model used for?

Back

The space-filling model is used to represent the relative sizes and spatial arrangement of atoms in a molecule.

Front

Can a molecule be an element?

Back

Yes, a molecule can be an element if it consists of two or more atoms of the same element, such as O2 (oxygen gas).

Front

What is the relationship between compounds and molecules?

Back

All compounds are molecules, but not all molecules are compounds; compounds must consist of different elements.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.