Thai Sikh International School
E-Learning Programme – Online
Assignment – 05/09/2014
Name
: Subject : Science
Year : Schedule
No. :
Tick
the correct answer
1. A liquid has a
definite
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Answers:
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mass and volume only
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shape and volume only
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mass and shape only
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mass, shape and volume
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2. In which of these
substances are the particles moving the least?
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Answers:
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A sheet of iron
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Cold air
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stagnant water
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Carbon dioxide gas
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3.
Solids do NOT diffuse like liquids or gases because
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there are strong attractive forces between the particles.
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their particles are too heavy to move.
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they have high melting points
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their particles are close together
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4. We can smell perfumes because their particles
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are moving around rapidly
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break down to give off smell
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are vibrating about fixed positions
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are closer together than normal
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5. When a gas is cooled, its particles
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move closer together
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become smaller
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move more rapidly
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become stationary
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6.
When a liquid becomes a gas, its particles
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move more freely
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slow down
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collide more often
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become closer together
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7. When the particles of a liquid escape from its surface at temperatures below its boiling point, the process is known as
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Answers:
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evaporation
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boiling
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condensation
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Sublimation
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8.
Which of the following processes involves a weakening of the attraction between
particles?
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Answers:
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Evaporation
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condensation
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Freezing
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Crystallization
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9. Which of these statements about a solid is incorrect?
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Answers:
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The particles in a solid can move around freely.
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The particles in a solid vibrate about fixed positions.
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There is very little space between the particles in a solid
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There is usually strong forces between the particles in a solid.
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10. Which state of matter always occupies the whole space of its container?
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Answers:
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Gas
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Liquid
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Liquid and Solid
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Solid
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