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Course: Alhussan Chemistry — Stage 7
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Alhussan Chemistry — Stage 7

Chapter 1: The Particle Model and States of Matter

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Chapter 2: Elements, Compounds and Mixtures

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Chapter 3: Metals and Non-Metals

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Chapter 4: Chemical Reactions 1

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Chapter 5: Acids and Alkalis

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Chapter 6: The Earth and Plate Tectonics

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Quiz

1.7 Models in science — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “A simplified way of describing something too small, large, slow or complicated to observe directly.”
Model
Experiment
Theory
Variable
2.
Which is a model of an electrical circuit?
A circuit diagram
A globe
A food web
A thermometer
3.
True or false? Models are perfect copies of the real thing.
True
False
4.
The particle model predicts diffusion is faster:
In a gas than a liquid, and when warm
When cold
Never
In a solid than a gas
5.
Substances expand when heated because the particles move further ____.
together
down
slowly
apart
6.
True or false? If particles hold together strongly in solid gold, gold has a high melting point.
True
False
7.
A student used peas in boxes to model states of matter. Which box models a gas?
Dr Dabour Hub Academy - figure 1
None
Box 1
Box 3
Box 2
8.
What is a limitation of using peas to model particles?
Peas can be counted
Peas do not move by themselves or attract each other
Peas can be arranged
Peas are round
9.
Dye spread 6 cm in water in 12 minutes. What was the mean speed of spreading?
2.0 cm/min
0.5 cm/min
72.0 cm/min
−6.0 cm/min
10.
Which model represents the Solar System?
A circuit diagram
A particle diagram
An orrery or diagram of planets
A food chain
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Part of Chapter 1: The Particle Model and States of Matter — see every lesson and quiz in this unit.
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