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how does a solid become liquid - freezing

There is a special temperature for every substance called melting point . when a solids reaches the temperature of its melting point, it bec...

  • how does a solid become liquid - freezing
    There is a special temperature for every substance called melting point . when a solids reaches the temperature of its melting point, it bec...
  • skill builder
    my house is 1500 square feet. we need a collector that occupies a third of the house. collector area: 300ft2    1 living space:  1500ft...
  • thinking critically
    16. much discussion has focused on the need to drive more efficent cars and use less electricity.if the law of conservation of energy is tru...