Exam: Cambridge English: B2 First (FCE)

Definition: Describes something that has undergone a chemical reaction with oxygen, often resulting in a change in color or composition.

Example: The metal has oxidized, giving it a rusty appearance.

Definition: To undergo a chemical reaction where a substance combines with oxygen, often resulting in a change in its properties.

Example: The metal has oxidized, causing it to turn a reddish color.

Definition: A device that measures how much oxygen is in the blood.

Example: The doctor used an oximeter to check the patient's oxygen levels.

Definition: A form of oxygen that has three atoms instead of two, often found in the upper atmosphere where it protects us from the sun's harmful rays. It can also be harmful as a pollutant in the lower atmosphere, causing respiratory issues.

Example: The ozone layer helps to shield the Earth from harmful ultraviolet radiation.

Definition: To walk or move at a steady speed, often with long steps.

Example: She decided to pace herself during the marathon to avoid getting tired too quickly.

Definition: A way of walking or running, often measured by the speed or distance covered in a certain time.

Example: She maintained a steady pace during her morning jog.

Definition: This word is used to indicate that something is done with respect to or in consideration of someone else's opinion or statement, often to show disagreement politely.

Example: Pace my critics, I believe my approach is the best solution.

Definition: To move or develop something at a specific speed or rate, or to measure distance by counting steps.

Example: She paced the room while waiting for the phone call.

Definition: A device or part of the body that controls the rhythm of the heart or sets the pace in various activities.

Example: The doctor recommended a pacemaker to help regulate her heartbeats.

Definition: Describing something that is calm, peaceful, or soothing, often used to refer to a tranquil nature or atmosphere.

Example: The pacific waters of the lake reflected the clear blue sky.

Definition: A small package or bundle that can hold items or information.

Example: I received a packet of seeds in the mail.

Definition: A soft material used to fill or cushion something, often found in clothing, furniture, or other items to provide comfort or support.

Example: The jacket has extra padding to keep you warm in winter.

Definition: Related to the medical care and treatment of children.

Example: The paediatric ward is designed to provide specialized care for young patients.

Definition: A doctor who specializes in the medical care of children.

Example: The paediatrician recommended a vaccination schedule for my baby.