K.C.S.E Physics Q & A - MODEL 2014PP1QN13

23/7/2020

K.C.S.E Physics Q & A - MODEL 2014PP1QN13

Figure 8 shows a graph of the variation of temperature with time for a pure substance heated at a constant rate.

Assuming that heat transfer to the surroundings is negligible, state the changes observed on the substance in region:
(a) BC;
(b) DE.

answers

(a) BC Solid changes to liquid
(b) DE Liquid changes to vapour

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FORM I - PHYSICS SYLLABUS

Introduction to Physics (4 Lessons)
Measurements 1 (12 Lessons)
Force (16 Lessons)
Pressure (24 Lessons)
Particulate Nature of Matter (12 Lessons)
Thermal Expansion (12 Lessons)
Heat Transfer
Rectilinear Propagation of Light and Reflection at Plane Surface (16 Lessons)
Electrostatics (12 Lessons)
Cells and Simple Circuits (12 Lessons)

FORM II - PHYSICS SYLLABUS

Magnetism (12 Lessons)
Measurements II (16 Lessons)
Turning Effect of Force (10 Lessons)
Equilibrium Centre of Gravity (12 Lessons)
Reflection at Curved Surfaces (16 Lessons)
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Hooke's Law (8 Lessons)
Waves (14 Lessons)
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Current Electricity (20 Lessons)
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Heating Effect of Electric Current (10 Lessons)
Quantity of Heat (20 Lessons)
Gas Laws (15 Lessons)

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Thin Lenses (20 Lessons)
Uniform Circular Motion (10 Lessons)
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Electronics (10 Lessons)

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