mechanical apparatus. Pieces of equipment used to do work. To shape, work on something, using a device.

on fire. When something is burnt by fire. To use as fuel for a fire to make light or heat.

quantity. (Values) added up to a certain figure. To add up to a certain figure.

For a reason.

not same as another or each other.

Participant in experiment that is left untouched. To direct or influence the behavior of something.

at present time.

performed from rest or upright position, without run-up. position, status, or reputation. To last for a long time.

Act of moving with your legs at a slowish pace. To move with your legs at a slowish pace.

instance of being injured. Physical or emotional harms or damages.

Less heavy; weighing less. device that produces small flame, used to light cigarettes.

energy needed to raise temperature of 1 gram of water through 1 °C. Unit for measuring the amount of energy in food.

(Of a term) created by combining two or more words. Chemical made up of several others. constitute.

Being the least difficult. without difficulty or effort.

body's relative mass or quantity of matter contained by it, giving rise to downward force. Metal object to measure how heavy something is. hold something down by placing heavy object on top of it.