What are molecules and compounds?

Molecules are groups of atoms bonded together, while compounds contain different elements bonded together.

How are compounds represented?

Compounds are represented by chemical symbols and consistent proportions of elements.

Mixtures involve physically mixed substances that can be separated without chemical bonds.

Compounds have elements bonded together, while mixtures are physically mixed substances.

Molecules are groups of atoms, while compounds are different elements bonded together.

Molecules are groups of atoms bonded together, while compounds consist of different elements with atoms held by chemical bonds, allowing for consistent proportions and formulas like H2O for water.
Mixtures involve physically mixed substances without chemical bonds, enabling separation through methods like filtration or distillation, contrasting with compounds formed by chemical bonding.

What are molecules and compounds?
Molecules are groups of atoms bonded together, while compounds contain different elements bonded together.
How are compounds represented?
Compounds are represented by chemical symbols and consistent proportions of elements.
What are mixtures and how are they separated?
Mixtures involve physically mixed substances that can be separated without chemical bonds.
How do compounds differ from mixtures?
Compounds have elements bonded together, while mixtures are physically mixed substances.
What is the difference between molecules and compounds?
Molecules are groups of atoms, while compounds are different elements bonded together.

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Molecules are groups of two or more atoms bonded together, such as oxygen existing as pairs of atoms. Compounds, on the other hand, contain two or more different elements with atoms held together by chemical bonds. Water, for instance, is a compound with two hydrogen atoms and one oxygen atom, represented by the formula H2O.
Compounds always have elements in consistent proportions, allowing for the creation of formulas using chemical symbols and the numbers of each atom. For example, carbon dioxide is represented as CO2, indicating two oxygen atoms and one carbon atom. Larger compounds, like sodium chloride (NaCl), consist of millions or billions of atoms, forming structures due to ionic bonds rather than molecules.
Mixtures involve substances not chemically combined, like oxygen molecules, sodium chloride, helium atoms, and carbon dioxide in a beaker. These substances are physically mixed and can be separated using methods like filtration, crystallization, or distillation, as there are no chemical bonds between them.