Classify each of the following as a pure substance or amixture:c. ice (H₂O)

Verified step by step guidance

1. Identify the composition of ice, which is solid water, represented by the chemical formula H₂O.
2. Understand that a pure substance has a uniform and definite composition, meaning it consists of a single type of particle.
3. Recognize that ice is composed entirely of water molecules, each consisting of two hydrogen atoms and one oxygen atom.
4. Consider that a mixture consists of two or more substances physically combined, which can be separated by physical means.
5. Conclude that since ice is made up of only water molecules and has a consistent composition throughout, it is classified as a pure substance.

Key Concepts

Pure Substances

A pure substance consists of a single type of particle and has a uniform composition throughout. This means it has consistent physical and chemical properties. Examples include elements like gold and compounds like water (H₂O). Pure substances cannot be separated into simpler substances by physical means.

Mixtures

A mixture is a combination of two or more substances that retain their individual properties and can be separated by physical means. Mixtures can be homogeneous, where the composition is uniform (like saltwater), or heterogeneous, where the composition is not uniform (like a salad). The components in a mixture do not chemically bond.

Classification of Matter

Matter can be classified into pure substances and mixtures based on its composition. Understanding this classification helps in identifying whether a sample is a pure substance, like ice (H₂O), or a mixture. This classification is fundamental in chemistry as it influences how substances behave and interact in chemical reactions.