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Neutron
Particles found in the nuclei of atoms, which have a similar mass to a proton, but no electric charge. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Electron
The tiny particles within all atoms that carry a negative electric charge. 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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Covalent bond
A strong chemical bond formed when atoms share pairs of electrons, forming molecules. 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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Unsaturated fats
Fats in which there is at least one double bond between carbon atoms in the carbon chain. 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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Molecular weight
The sum of the atomic masses of all the atoms in a molecule, usually expressed in atomic mass units. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Reactivity
The tendency of a substance to undergo chemical reactions. 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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Nanometre
One billionth of a metre. 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 and key curriculum...
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Diatomic
Refers to molecules that contain only two 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 abstract concepts...
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Amorphous
An amorphous solid is one whose atoms or molecules are not arranged in an ordered crystalline lattice. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Allotropes
Different forms of the same element, composed of exactly the same atoms, in the same physical state, but in different arrangements. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Isotope
Atoms of the same element with different numbers of neutrons. 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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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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Mass spectrometer
An instrument that analyses characteristics of atoms and molecules, including their mass. 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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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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Element
An element is a pure substance that cannot be broken down any further by chemical means. 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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Activation energy
The minimum amount of energy needed to initiate a chemical 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...
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Molecular formula
A formula that shows the actual numbers of atoms of each element in one molecule of a compound. 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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Oxidiser
A chemical agent that readily releases oxygen atoms, or that readily gains electrons in a redox reaction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Metal
The elements in the middle and left side of the Periodic Table are all metals. 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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Polyunsaturated
Chains of carbon atoms, especially in fats and oils, that contain two or more double bonds between carbon atoms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Ionic compound
A chemical compound typically formed from metal and non-metal elements combining. 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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Isomers
Molecules with identical molecular formulas but in which the atoms are arranged differently. 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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Brownian motion
The random movement of small, visible particles suspended in a liquid or gas, when viewed under a microscope. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Formulae
A chemical formula is a way of writing the composition of a compound. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...