chemical definition science
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Definitions &Translations Definitions for chemical science. chemistry, chemical science(noun) the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions. Chaldean Numerology. The numerical value of chemical science in Chaldean Numerology is: 5.
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chemical 2 chemical. noun. : any substance (as an acid) that is formed when two or more other substances act upon one another or that is used to produce a change in another substance.Spanish Central: Spanish translation of chemical. chemical. noun. : any substance (as an acid) that is formed when two or more other substances act upon one another or that is used to produce a change in another substance.
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Chemical substance A chemical substance is a form of matter that has constant chemical composition and characteristic properties.It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys. chemical substance (also called a pure substance) may well be defined as any material with a definite chemical composition in an introductory general chemistry textbook. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound.
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Queen Hatshepsut: Facts, Accomplishments & Death Lesson Summary. Hatshepsut ruled Egypt from roughly 1479 to 1458 BCE, the longest of any female pharaoh. Unlike most queens, who ruled only as wives to the pharaoh, Hatshepsut was the sole ruler of Egypt and one of the most powerful women in history.ackground. Hatshepsut was born around 1508 BCE to Pharaoh Thutmose I and his primary wife Ahmes. She was a member of the 18th Dynasty, or 18th family to control Egypt, which ruled from 1543 to 1292 BCE.
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Chemistry Is Everywhere In more formal terms chemistry is the study of matter and the changes it can undergo. Chemists sometimes refer to matter as ‘stuff’, and indeed so it is. Matter is anything that has mass and occupies space. Which is to say, anything you can touch or hold.
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Chemistry A chemical element is a pure substance which is composed of a single type of atom, characterized by its particular number of protons in the nuclei of its atoms, known as the atomic number and represented by the symbol Z. The mass number is the sum of the number of protons and neutrons in a nucleus. Although all the nuclei of all atoms belonging to one element will have the same atomic number, they may not necessarily have the same mass number; atoms of an element which have different mass numbers are known as isotopes.
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- A chemical element or element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z).he atomic number of an element is equal to the number of protons in each atom, and defines the element. For example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6.
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- Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys.
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chemical reaction Definition of chemical reaction. : a chemical change that occurs when two or more substances combine to form a new substance.
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- -·tries. 1  the science dealing with the composition and properties of substances, and with the reactions by which substances are produced from or converted into other substances. 2  the application of this to a specified subject or field of activity. 3  the chemical properties, composition, reactions, and uses of a substance.
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- A chemical element or element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z).
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Chemical substance Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. chemical substance (also called a pure substance) may well be defined as any material with a definite chemical composition in an introductory general chemistry textbook. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound.
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Definitions &Translations Princeton's WordNet (3.67 / 3 votes) Rate this definition: chemistry, chemical science (noun) the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions. chemistry (noun) the chemical composition and properties of a substance or object the chemistry of soil
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Chemical energy Chemical reaction. Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
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Chemical substance A chemical substance, also known as a pure substance, is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar .
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Definitions &Translations Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Chemistry(noun) that branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms.
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Chemistry Chemistry is the science of chemical elements and compounds. Chemistry is a branch of science that deals with chemical elements and compounds, and how these things work together. It is the study of the materials (things) that make up our bodies and everything in the world around us.
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Chemical element A chemical element is a substance that contains only one type of atom. If a substance contains more than one type of atom, it is a compound. An element can be a solid, liquid or gas. The smallest particle of such an element is an atom. Atoms are made up of protons, neutrons, and electrons.
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- A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products..
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Chemistry Chemistry. Chemistry is the study of the composition of matter and the changes that take place in that composition. If you place a bar of iron outside your window, the iron will soon begin to rust. If you pour vinegar on baking soda, the mixture fizzes.
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Chemical substance A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys.hemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory.
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- Let’s break this down: A chemical is any substance that can be defined by its atomic or molecular composition. That covers a lot of ground! Any element is a chemical, an element being any substance that can be defined by a single atom. Thus hydrogen (H) and oxygen (O) are chemicals. Any compound is also a chemical, a compound being any substance defined by two or more bonded atoms. Thus water (H2O), consisting of bonded hydrogen and oxygen, is a chemical.
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- Noun. 1. chemist-a scientist who specializes in chemistry. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions. biochemist-someone with special training in biochemistry.
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Overview of Chemistry Chemistry is the study of matter and the chemical reactions between substances. Chemistry is also the study of matter's composition, structure, and properties. Matter is essentially anything in the world that takes up space and has mass.
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chemical 1. a substance produced by or used in chemistry. 2. chemicals, Slang. narcotic or mind-altering drugs or substances. adj. 3. of, used in, produced by, or concerned with chemistry or chemicals: a chemical formula. 4. used in chemical warfare: chemical weapons.
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element In chemistry, any material (such as carbon, hydrogen, iron, or oxygen) that cannot be broken down into more fundamental substances. Each chemical element has a specific type of atom, and chemical compounds are created when atoms of different elements are bound together into molecules.