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States of Matter Review Clicker

States of Matter Review Clicker. Is this a heating or cooling graph? . Heating Cooling Both of the above None of the above. What is the condensation temperature of the substance? . 0 °C 50°C 100°C 200°C. There are two flat sections in the above graph. Why? .

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States of Matter Review Clicker

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  1. States of Matter Review Clicker

  2. Is this a heating or cooling graph? • Heating • Cooling • Both of the above • None of the above

  3. What is the condensation temperature of the substance? • 0°C • 50°C • 100°C • 200°C

  4. There are two flat sections in the above graph. Why? • IF are breaking • IF are being created (forming) • The phase change is increasing the temp • None of the above

  5. A cooling curve is • Exothermic and a chemical change • Endothermic and a chemical change • Exothermic and a physical change • Endothermic and a physical change

  6. A warming curve is • Endothermic and a chemical change • Exothermic and a chemical change • Endothermic and a physical change • Exothermic and a physical change

  7. Which of the following is sublimation? • Solid to liquid • Solid to gas • Liquid to gas • Gas to liquid

  8. Water has a formula of H20, and its molecular weight is 18 amu. Pentane has a formula of C5H12and its molecular weight is 72.15 amu: why does pentane evaporate faster? • Pentane has stronger IF’s • Water has stronger IF’s • They have the same IF’s, but pentane has a larger molecular weight

  9. WHY? • Water forms hydrogen bonds which increase the intermolecular forces between the molecules. • Pentane does not form H bonds so it is easier to break the intermolecular forces between them.

  10. What is the molecular weight of Ba(OH)2? • 308 amu • 171 amu • 155 amu • 400 amu

  11. The kinetic theory says molecules are in • Constant motion • Slow motion • Constant movement • All of the above • Both 1 and 3 • Both 2 and 3

  12. Matter Formative

  13. Which type of matter has a definite shape and definite volume? • Gas • Liquid • Solid • plasma

  14. Which type of matter has indefinite shape but definite volume and can take the shape of the container? • Gas • Liquid • Solid • plasma

  15. Which type of matter has an indefinite shape and indefinite volume? • Gas • Liquid • Solid • plasma

  16. Which type of matter contains charged particles and is a good conductor? • Gas • Liquid • Solid • plasma

  17. Why are there 2 portions of the phase change curve in which the temperature is not increasing? (the water is not removed from the heat source during any portion of time)

  18. At which of the following stages in the experiment would the average molecular speed of the water molecules be greatest? • Ice stage • Water + ice stage • Water stage • Water vapor stage

  19. What is the theory that says tiny particles are always in motion and the higher the temp. the faster the particles move? • Thermal energy • Kinetic theory • Law of conservation of mass • Law of conservation of motion

  20. The molecular weight of water (H20) is 18 amu and pentane (C5H12) is 72.15 amu: which will evaporate faster? • Pentane • Water • They will evaporate at the same rate • They will not evaporate

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