Page 3 of 7 How does a substance change phase? What does the temperature do duri
ID: 1040154 • Letter: P
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Page 3 of 7 How does a substance change phase? What does the temperature do during this process? (HINT 2.06 Phase Change Lab; lesson 2.09, page 9 8. a. The molecules move faster and the temperature stays the same b. The molecules move slower and the temperature goes down c. The bonds between molecules break and the temperature goes up d. The bonds between molecules break and the temperature stays the same is the measure of the thermal energy of molecules. (HINT: lesson 2.09, page 4) Unit 3 10. Compressed Gas- When a gas is compressed, the same number of gas particles will occupy a smaller space. Fill in the chart: (HINT: great examples in lesson 3.03) For a compressed gas: ed OR decreased OR the same? The mass of these particles is The volume of these particles is What will happen to the density of a compressed gas? Because the particles of a compressed gas are closer together, they bump into each other more often. This means that the temperature is Because the particles of a compressed gas have more collisions with their container, this means that the pressure is UNIT 4 11. Fill in the chart then answer the questions that follow: JOB/ROLE of the Charge (+ or- or neutral) Lesson 4.01 (p3) mass in atomic mass units (amu) Lesson 4.05 Location Lesson 4.01 & 4.05 (pg4,5) Lesson 4.03 (p3) & Lesson 4.0S (p5) Proton Neutron ElectronExplanation / Answer
8) During the phase change the temperature remains the same but heat energy changes. And this heat energy is utilised in changing the phase of the substance by breaking the bond between the molecules.
So, option d is the correct choice.
9) temperature is the average measure of the thermal energy of molecules.
And since it is an average measurement it is independent of the number of particles in a substance.
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