Curriculum
Course: Science — Second Preparatory
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Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

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Unit 2: Matter and Chemical Reactions

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Unit 3: Energy Flow in Photosynthesis and Respiration

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Unit 4: Geological Processes

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Quiz

Internal Energy and Temperature — Lesson quiz

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  • Questions count: 6
  • Passing grade: 60%
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1.
What does temperature represent?
The total potential energy of the particles
The total amount of heat in a substance
The average kinetic energy of the particles of a substance
The mass of the particles in a substance
2.
Does internal energy depend on the mass of a substance?
No, because internal energy never depends on the number of particles
No, because mass has no effect on energy at all
No, because only the temperature determines internal energy
Yes, because it depends on the number of particles and their energy
3.
Convert 100 °C to kelvin.
373 K
273 K
100 K
173 K
4.
Calculate the heat needed to heat 2 kg of water from 20 °C to 45 °C, given c = 4200 J/(kg·°C).
21 kJ
210 kJ
2100 kJ
168 kJ
5.
Which needs more heat to warm up by the same amount, water or iron? Why?
Iron, because its specific heat capacity is larger
Both need the same heat because their masses are equal
Water, because its specific heat capacity is larger
Iron, because its density is lower
6.
In which direction does heat move between two bodies?
From the cooler body to the hotter body
Equally in both directions at all times
Only between bodies made of the same material
From the hotter body to the cooler body
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