Exam: Cambridge English: C1 Advanced (CAE)

Definition: To continue to give off light after being exposed to a light source, without producing heat or fire.

Example: Some materials can phosphoresce, glowing in the dark after being charged by light.

Definition: The release of light by a substance after it has absorbed energy, which continues for a period of time even after the energy source is removed.

Example: The phosphorescence of the glow-in-the-dark stars on the ceiling amazed the children.

Definition: Describing a material that can give off light for a while after being charged or exposed to light, even when the light source is removed.

Example: The phosphorescent paint glowed in the dark after being exposed to sunlight.

Definition: A material that can absorb light and then emit it slowly over time, often glowing in the dark after being exposed to light.

Example: The phosphorescent paint glowed in the dark after being charged by sunlight.

Definition: Relating to or containing phosphorus, particularly in a higher oxidation state than in certain other phosphorus compounds.

Example: Phosphoric acid is commonly used in fertilizers and food products.

Definition: A type of sedimentary rock that is mainly made up of phosphate minerals, especially apatite.

Example: Phosphorite is an important source of phosphorus for fertilizers.

Definition: Relating to a type of sedimentary rock that contains a high percentage of phosphate minerals, often used as a fertilizer.

Example: The phosphoritic layers in the rock formation indicate a rich source of phosphorus.

Definition: A type of chemical reaction where a bond is broken by the action of phosphoric acid or phosphate, similar to hydrolysis.

Example: Phosphorolysis is an important process in biochemistry, especially in the breakdown of certain carbohydrates.

Definition: Relating to a chemical process where a phosphate group is added to a molecule, often breaking down larger molecules into smaller ones.

Example: The phosphorolytic reaction is essential in the metabolism of carbohydrates.

Definition: A chemical element that is highly reactive and poisonous, found in nature mainly in phosphates. It is important for life and is used in various products like fertilizers and safety matches.

Example: Phosphorus is essential for plant growth and is commonly used in fertilizers.

Definition: A chemical group that consists of phosphorus and oxygen, often involved in biological processes like energy transfer.

Example: The phosphoryl group plays a crucial role in the formation of ATP, which is essential for energy transfer in cells.