The over excited metal-molecules are rapidly accelerating when the metal is heated, and this excitement caused them to collide more frequently than usual and in more drastic and random motions. The increase in kinetic energy promotes expansion.
They expand ------- No, normally metals expand when heated.
No. A chemical change occurs only when a new substance is produced with new and different properties. In your example, a physical change occurred because only the metal's physical properties were affected. Nothing new was created.
When matter is heated it will expand
Metal expands when it is headed, Because of a process called melting , the more you heat a substance the more it will expand, ( the atoms ) will will get to a point where it will become a liquid and if heated enough the atoms will get so far apart that it will become a gas.
expand
Metal expands when it is heated. Since track is made of metal then it expands when it is heated by the sun.
because metal will expand when it has been heated up
Yes, metal will expand when heated regardless of its thickness. Thicker pieces of metal will expand in all dimensions, but the expansion will be proportional to the increase in thickness.
it wil expand
yes it does because the paricles expand.
Metal expands when heated, friction.
They expand ------- No, normally metals expand when heated.
Yes, but it is hard to see unless the object is massive.
It will expand, and if heated enough, will start to glow and melt.
They are heated to make them expand and trhen they are hammered on.
The atoms that make up the metal are loosened up by the heat, therefore causing the metal structure to become more flexible.
Heat causes the metal to expand, thus breaking the seal.