🔬 Particle Theory of Matter
Explore the fundamental ideas of particle theory and how they explain the behaviour of matter. This quiz focuses on the three key principles: matter is made of tiny particles, particles are in constant motion, and particles attract each other. You'll apply these concepts to understand density, diffusion, and why substances have the properties they do. **What you'll learn:** - The three core ideas of particle theory and how they apply to all matter - How particle motion increases with temperature - Why diffusion occurs and how it relates to particle movement - How particle theory explains density and macroscopic properties of substances
Questions in this quiz
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- Question 1
According to the particle theory of matter, what is the most basic building block of all matter?
- Question 2
According to particle theory, particles of matter are always stationary and do not move at all.
- Question 3
Which statement best explains why a solid has a fixed shape and volume?
- Question 4
What happens to the movement of particles when a substance is heated?
- Question 5
Diffusion is the process where particles spread out evenly through a space due to their constant random motion.
- Question 6
Why does a drop of food colouring eventually spread throughout an entire glass of water without being stirred?
- Question 7
In a gas, particles are far apart with weak forces between them. Which statement about gas particles is correct?
- Question 8
Density can be explained using particle theory: substances with particles packed more closely together have higher density.
- Question 9
Which of the following is the best explanation for why hot air rises from a warm surface?
- Question 10
How does particle theory explain why ice melts into liquid water when heated?
- Question 11
Attractive forces between particles only exist in solids and do not apply to liquids or gases.
- Question 12
Why does perfume smell spread quickly through a room even though you don't shake the bottle or fan it?
- Question 13
Which state of matter best shows that particles have weak or no effective attractive forces?
- Question 14
All pure substances, whether they are elements or compounds, are made of particles that follow the three key ideas of particle theory.
- Question 15
A sealed container holds a gas. What does particle theory predict will happen if the container is made smaller without changing the temperature?
- Question 16
Why does salt dissolve faster in hot water than in cold water?
- Question 17
Which of the following is NOT explained directly by the three key ideas of particle theory?