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A chemical is a substance with a specific composition. It is an element, an alloy, or a compound made up of two or more elements combined in a fixed ratio. For instance, water (H 2 O) is a chemical because it consists of hydrogen and oxygen combined in a 2:1 ratio. All matter either is a chemical or else consists of chemicals.
A chemical is any substance that has a defined composition. In other words, a chemical is always made up of the same "stuff." Some chemicals occur in nature, such as water. Other chemicals are manufactured, such as chlorine (used for bleaching fabrics or in swimming pools).
Plant fibers, animal bones, rocks, and soil are all made up of chemicals. Some minerals, such as copper and zinc, are made entirely from one element. Granite, on the other hand, is an example of an igneous rock that's made up of multiple elements.
Chemicals aren't just exotic substances found in a chemistry lab. Here's a look at what makes something a chemical and the answer to whether everything is a chemical. Everything is a chemical because everything is made of matter. Your body is made of chemicals.
chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.
It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds.
All matter, including us, is made of chemicals. Chemistry is the study of the composition, structure, properties and reactions of matter. Everything you can breathe, see, ingest or touch is made up of chemicals.
Far from it, chemists believe that everything is made of chemicals. Although there are countless types of matter all around us, this complexity is composed of various combinations of some 100 chemical elements.
You study chemistry because it helps you to understand the world around you. Everything you touch or taste or smell is a chemical, and the interactions of these chemicals with each other define our universe. Chemistry forms the fundamental basis for biology and medicine.