Changing State by Adding Heat 1 PDF

LESSON 6 LEARNIN We are learning to explain the changes G of states of matter when adding heat INTENTIO N  CHAPTER 2.3 CHANGING STATE ADDING Heating a solid, HEAT liquid or gas will usually just cause its temperature to increase. If you had enoug...

LESSON 6 LEARNIN We are learning to explain the changes G of states of matter when adding heat INTENTIO N  CHAPTER 2.3 CHANGING STATE ADDING Heating a solid, HEAT liquid or gas will usually just cause its temperature to increase. If you had enough heat, then the substance will change state. Given enough heat, solids will turn into liquids and then liquids into gases. MELTING Melting is the process in which heat causes a solid to change into a liquid. Although the physical properties of the substance change, the substance itself is exactly the same. Heat adds energy to the particles in a solid making them vibrate faster. If you add enough heat, the particles will vibrate EVAPORATI The process in which heat ONcauses a liquid to change into a gas. Heat causes liquid water to evaporate, turning into a gas known as water vapour. Water evaporates at all heats because there is always some heat to make some particles move fast enough. This is why clothes on the BOILING Boiling is a special case of evaporation. Evaporation occurs at any temperature, but boiling only happens at a temperature known as the boiling point. Bubbles form because of the evaporation pockets of liquid deep inside the liquid. These pockets change into gas, which expands to BOILING The boiling point of a POINT substance is the temperature at which it changes from a liquid into a gas. Water has a boiling point of 100 degrees celsius. Different substances have different boiling points.