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Spectroscopy
A technique that uses a prism to split the light coming off an object or atom. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Line spectra
A set of well-defined lines within the electromagnetic spectrum, emitted by hot or excited matter. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Ion
An atom or molecule that has gained or lost one or more electrons, and so has an electrical charge. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Electron shell
An orbit around the nucleus of an atom that can be occupied by one or more electrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Proton
A positively charged particle found in the nucleus of all atoms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Ionisation
The process of stripping electrons from, or adding them to, atoms or molecules to produce charged ions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Emission
The release of electromagnetic radiation, often in the form of light, from an atom or molecule. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Nucleus (chemistry)
In an atom, the small, dense, positively charged structure at its centre, containing the protons and neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Amino acid
The building blocks of proteins and polypeptides. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Reduction
Any chemical reaction in which oxygen is removed from a substance. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Fusion
The joining together of two or more distinct parts to make a unified whole. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Atom
The building blocks of all matter, being the smallest unit that retains the chemical properties of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Spontaneous emission
The process in which an atom or molecule produces a photon of light when it undergoes a spontaneous transition from an excited state to a lower energy level. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
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Atomic number
The number of protons in the nucleus of an atom. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts...
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Aurora
Also known as the Northern or Southern Lights. Natural displays of light in the polar regions, clearly visible in the night sky. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Electromagnetic spectrum
The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Nuclear
Relating to the nucleus of an atom. The 'nuclear model' of the atom is one that describes a system of a nucleus surrounded by electrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images...
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Factpack: Elements, Compounds, Mixtures
Definitions and examples of three distinct chemical classifications: elements, compounds and mixtures. Chemistry - Atoms And Bonding - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic,...
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Functional group
An atom or group of atoms within a compound that reacts in a characteristic way, giving molecules particular chemical properties. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Spontaneous
Occurring without any external influence or trigger, entirely by its own means. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Isotopic mass
The mass of 1 atom of a specific isotope of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Substitution reaction
A reaction in which one functional group in a molecule is replaced by another functional group. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Chain reaction
A series of reactions, each the result of a preceding reaction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Discovery of the Atom
The story of New Zealand scientist Ernest Rutherford, who revolutionised science by discovering the structure of the atom in 1908. Chemistry - Atoms And Bonding - Learning Points. In 1908, Ernest Rutherford conducted the gold leaf...