Final answer:
The statement is true; a mixture consists of two or more substances, such as elements and compounds, that are not chemically bonded and can be separated physically. Examples include air and cereal in milk, showcasing the characteristics of mixtures.
Step-by-step explanation:
The statement is true: A mixture is made of two or more substances–elements, compounds, or both–that are together in the same place but are not chemically combined. Mixtures can be physical combinations of more than one substance and these include both elements and compounds. The main characteristics of a mixture include the lack of a chemical bond between the substances, the ability for the substances to retain their original properties, and the potential to separate these substances through physical means such as filtration or distillation.
For example, air is a mixture of different gases like nitrogen, oxygen, and carbon dioxide which are not chemically bonded and can be separated by physical methods. Similarly, a bowl of cereal in milk consists of solid cereal pieces and liquid milk that can be easily separated by simply removing the cereal with a spoon, illustrating the non-bonded nature of mixtures.
Additionally, mixtures can be either homogeneous or heterogeneous. A homogeneous mixture, like saltwater, has a uniform composition throughout, while a heterogeneous mixture, such as salad, has visibly different parts and a non-uniform composition.