*



You are watching: Why does gas expand when heated

*

Expansion and also Contraction : Why does heat and cold make points expand and also contract ? also why carry out some metals expand an ext than others? asked by: Marcus MckeanAnswerRecall the all products are made up of atoms. At any kind of temperature above absolute zero (-273 degreescelsius) the atoms will be moving. In a heavy they will certainly be vibrating in fixed positions, ina fluid thy will certainly be jostling past each other and also in a gas they will be whizzing previous eachother at really high speeds. Once a product is heated, the kinetic energy of the material boosts andits atoms and also molecules move about more. This means that each atom will certainly take up an ext space because of its motion sothe product will expand. Once it is cold the kinetic energy decreases, so the atoms take up less spaceand the material contracts. Some steels expand more than rather due to distinctions in the forces in between the atoms / molecules. In metalssuch as iron the forces in between the atoms space stronger so that is more complicated for the atom to movearound . In brass the forces are a little weaker for this reason the atoms are complimentary to move about more. Thesedifferences in convulsion are offered in a bimetallic strip, which is composed of a piece of brasslaid along side piece of Iron. When the piece is boil the brass expands more than the iron so thestrip beds. That is used in devics such together fire alarms and also circuit breakers to either make or breakcontacts in an electric circuit. The differences in expansion and contraction room even an ext visible in various states, again due tothe quantity of force holding the atom together. A gas will broaden the most as its atoms are freefrom each various other so are free to increase in rate the most.Answered by: Sara Al-Assam, Student, Tiffin Girls" School, Kingston
"Beauty is a harmonious relation in between something in our nature and also the high quality of the thing which delights us."Blaise Pascal(1623-1662)


See more: How To Unsend An Aol Email Aol, Can I Stop Or 'Un

Top 100 Lists: science KitsScience SuppliesScience toys & GiftsCorporate GiftsStocking Stuffers popular Products: Scientific workdesk ToysPhysics KitsHobby Solar CellsPhysics lab SuppliesTest & MeasurementOptics & LasersHobby DC MotorsBattery Holders science Articles: 7 warm Summer science Experiments8 science Experiment IdeasScience fair AdviceKeeping youngsters Interested in ScienceSummer Science jobs