Post a New Question

Science

posted by .

What occurs when a substance melts?
1) It changes from solid to liquid, and heat is absorbed.
2) It changes from solid to liquid, and heat is released.
3) It changes from liquid to solid, and heat is absorbed.
4) It changes from liquid to solid, and heat is released.

  • Science -

    as a substance melts, it changes from solid to liquid and heat is absorbed

  • Science -

    thanks :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    in different parts of a car air conditioner a liquid changes to a gas and a gas changes to a liquid. a)which of these changes causes the cooling?
  2. chemistry

    22. Choose the best description for a solid held together by London forces. A. This substance melts at -30 °C to give a liquid that does not conduct electricity. B. This substance melts at 650 °C and both the solid and liquid phases …
  3. chemistry

    As the temperature of a gaseous substance is decreased at constant pressure, it will undergo a series of physical changes. Which is the correct sequence of physical states that will be encountered?
  4. Science

    7. Which of the following changes gives no evidence that a chemical reaction has taken place?
  5. physics

    This graph in the figure (Figure 1) shows how the temperature of an initially solid sample changes as time goes by when it is placed above a flame that delivers a constant heating power (that is, a fixed amount of energy input in the …
  6. physics

    An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely …
  7. Physics

    An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely …
  8. Chemistry

    What changes of state are involved in this use of ethyl chloride?
  9. chem

    ethanol melts at -114c the enthalpy of fusion 5.02 kj/mol the specific heats of solid and liquid ethanol are 0.97 and 2.3 respectively . how much heat is needed to convert 25 g of solid etanol ay -135c to liquid ethanol at -50c?
  10. CHECK my answers Physical science

    1. which of the following should be classified as a suspension?

More Similar Questions

Post a New Question