Composition

Composition refers to the different parts or elements that make up a whole. In the context of science, composition can refer to the composition of substances, such as the elements that make up a compound or the components of a mixture.

Types of Composition

In science, composition can be categorized into two main types: the composition of compounds and the composition of mixtures.

Composition of Compounds

Compounds are substances that are made up of two or more different elements that are chemically combined in a fixed ratio. The composition of a compound refers to the specific elements present and the proportion in which they are combined. For example, water (H₂O) is a compound composed of two hydrogen atoms and one oxygen atom.

Composition of Mixtures

Mixtures, on the other hand, are made up of two or more substances that are physically combined but not chemically bonded. The composition of a mixture refers to the different components present and their relative amounts. For example, a salad is a mixture composed of lettuce, tomatoes, cucumbers, and dressing.

Study Guide

1. Define Composition: What does composition refer to in the context of science?
2. Types of Composition: What are the two main types of composition in science?
3. Composition of Compounds: Explain the composition of compounds and provide an example.
4. Composition of Mixtures: Explain the composition of mixtures and provide an example.