Final answer:
Energy and heat are not examples of matter as they do not have mass or take up space. Carbon dioxide, jelly, and sponge are examples of matter because they have mass and occupy physical space. A chemist categorizes substances based on their composition and properties, such as coffee being a mixture, hydrogen an element, and an egg a complex mixture.
Step-by-step explanation:
When it comes to identifying what is not an example of matter, the key is to remember that matter is anything that has mass and takes up space. The items on the list that fit this definition are carbon dioxide, jelly, and sponge, as they all have mass and occupy physical space. Meanwhile, energy and heat are not examples of matter because they do not have mass or volume — they are forms of energy, which is a different concept.
A chemist categorizing different examples of matter might say:
- Coffee is a heterogeneous mixture, a mixture of substances that are not uniform throughout.
- Hydrogen is an element, more specifically, it is a gas at room temperature and is the simplest and most abundant element in the universe.
- An egg is a complex mixture of proteins, fats, and water, and includes cells that could be studied in biology as well as chemistry.
Examples of items that are not considered matter would be ideas, emotions (such as love), or any other concept that does not have physical properties of mass and volume.