Exam: TOEFL

Definition: A chemical compound that contains chlorine, often combined with another element or group, such as in salts or esters.

Example: Sodium chloride is commonly known as table salt.

Definition: To treat something with chlorine or a chlorine compound to disinfect or purify it.

Example: The water supply was chlorinated to ensure it was safe for drinking.

Definition: Describing water that has had chlorine added to it for the purpose of cleaning or disinfecting.

Example: The swimming pool is filled with chlorinated water to keep it safe for swimmers.

Definition: To treat something with chlorine, usually to purify or disinfect it, especially water.

Example: The swimming pool was chlorinated to keep the water clean and safe for swimmers.

Definition: The process of adding chlorine to a substance, usually water, to make it clean and safe to use.

Example: Chlorination is an important step in making drinking water safe.

Definition: A greenish-yellow gas that is used to clean water and as a disinfectant. It can combine with many other elements and has a strong smell.

Example: Chlorine is often added to swimming pools to keep the water clean and safe.

Definition: A way to measure how much chlorine or similar substances are present in water, particularly in seawater.

Example: The chlorinity of the seawater was tested to determine its quality.

Definition: A clear, colorless liquid that can catch fire easily, used in making other chemicals and as a solvent.

Example: Chlorobenzene is often used in laboratories as a solvent for various reactions.

Definition: A clear, colorless liquid that has a sweet smell and is used in various applications like solvents and refrigerants. It was once commonly used as an anesthetic in surgeries but is now less frequently used due to its toxicity.

Example: The laboratory used chloroform to dissolve the chemical compounds for the experiment.

Definition: To use a chemical compound to anesthetize or make someone unconscious.

Example: The doctor decided to chloroform the patient before the surgery.

Definition: A green pigment found in plants that helps them make food through photosynthesis.

Example: Chlorophyll gives plants their green color and is essential for photosynthesis.

Definition: Relating to or containing chlorophyll, which is the green pigment in plants that helps them make food through photosynthesis.

Example: The chlorophyllous plants in the garden thrive in sunlight.