Exam: Cambridge English: C1 Advanced (CAE)

Definition: A chemical group derived from acetic acid, consisting of a carbon atom double-bonded to an oxygen atom and single-bonded to a methyl group.

Example: Acetyl is an important functional group in organic chemistry.

Definition: To add a specific chemical group called an acetyl to a molecule, which can change its properties or functions.

Example: The chemist decided to acetylate the compound to enhance its properties.

Definition: This term describes something that has undergone a chemical reaction with acetic acid or has had acetyl groups added to it.

Example: The acetylated compound showed improved solubility in organic solvents.

Definition: To have undergone a chemical process where an acetyl group is added to a compound, often to modify its properties.

Example: The compound was acetylated to enhance its solubility.

Definition: This is a chemical process where a substance reacts with acetic acid or its derivatives, adding one or more acetyl groups to that substance.

Example: Acetylation is a crucial step in the modification of proteins.

Definition: A chemical substance in the body that helps transmit signals between nerve cells. It is important for muscle movement and various functions in the nervous system.

Example: Acetylcholine plays a crucial role in muscle contraction and the functioning of the autonomic nervous system.

Definition: A clear, colorless gas that can easily catch fire or explode. It is used mainly for welding metal and in some chemical processes.

Example: Acetylene is commonly used in welding due to its high flame temperature.

Definition: Relating to a type of chemical compound that contains a carbon-to-carbon triple bond, which is a characteristic of acetylene and similar substances.

Example: The chemist synthesized an acetylenic compound for the experiment.

Definition: Referring to a molecule or object that can be placed on top of its mirror image without any changes, meaning it does not have a distinct left or right form.

Example: The molecule is achiral, meaning it can be superimposed on its mirror image.

Definition: This word describes a condition where there is no hydrochloric acid present, which is important for digestion in the stomach.

Example: The patient was diagnosed as achlorhydric, indicating a deficiency of stomach acid.

Definition: A type of meteorite that is made of stone and does not have small, round particles called chondrules.

Example: The achondrite fell to Earth, providing valuable information about the early solar system.