An organ that produces a specific substance the body needs, such as a hormone.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

A substance that is added to a product in order to prevent decomposition or undesirable chemical changes.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

A substance in which the concentration of oxygen is elevated is said to be oxygenated.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Material that has a definite chemical composition and distinct properties.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

A substance that is not readily ignited or rapidly burned is said to be non-flammable.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

A physical or psychological dependence, leading to symptoms of withdrawal when the substance is removed.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

The ability of a substance to withstand the effects of high temperature without being permanently changed.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

The amount of space a substance occupies.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

A substance that has had oxygen removed from it in some way.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

A substance which turns easily to a vapour at normal temperatures and pressures.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Meaning water-loving, a hydrophilic substance is one that readily associates with water.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Meaning water-fearing, a hydrophobic substance is one that repels water.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

To make a solution of something by mixing a soluble substance into a solvent, such as salt into water.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

A dry coloured substance that can be used to give colour to paints, plastics and other materials.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

Any chemical reaction in which oxygen is removed from a substance.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

A substance with properties that arise from extremely small structures, of the order of 1 to 100 nanometres.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images...

A type of rock containing minerals from which a useful substance can be extracted.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

A measure of how much of one substance is dissolved or dispersed in another, for example salt in water, or oxygen in the atmosphere.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

The transfer of heat energy due to a difference in temperature, always from a hotter to cooler area.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

A substance that provides a visual indication of the pH of a test material.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

Originally used in relation to radioactivity, describing the time required for half the atoms of a radioactive substance to decay.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

A substance that removes oxygen from, or donates electrons to, another substance during a reaction.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

A substance that has been converted to liquid form by heating.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

A substance that when molten or dissolved in solution, releases free ions that make it electrically conductive
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images...