Estimating Size of Particles in Matter Quiz and Flashcards

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Questions and Answers

What does the experiment with potassium permanganate and water demonstrate?

Dilution causes particles of matter to lose their color.

Particles of matter can divide themselves into smaller particles. (correct)

Potassium permanganate has a strong odor that can be detected from a distance.

Particles of matter are invisible to the naked eye.

What conclusion can be drawn from the observation that the smell of Dettol can still be detected even after repeated dilution?

Dettol has a unique property of retaining its smell regardless of dilution.

The smell of Dettol is due to the high force of attraction between its particles.

The particles of Dettol are very small and remain detectable even after dilution. (correct)

The particles of Dettol are larger compared to other substances.

In the experiment described, what does the observation that ink spreads evenly in water suggest about the particles of ink?

Ink particles are very large and heavy.

Ink particles can flow easily due to their liquid state.

There is space between ink particles allowing for even distribution in water. (correct)

Ink particles are attracted to each other, causing them to spread out.

Why does adding honey along the sides of a beaker allow it to slowly flow in the water inside?

There is space between honey particles that allows them to flow. Signup and view all the answers

What property of matter is highlighted by the observation that a drop of ink spreads evenly in water?

Matter can mix with other substances due to particle space. Signup and view all the answers

Based on the given information, what can be inferred about the size of the particles in substances like sugar and salt?

They are larger compared to Dettol and potassium permanganate particles. Signup and view all the answers

What is the force of attraction between particles like in a gas compared to a solid?

Non-existent in gas Signup and view all the answers

Which of the following substances has the highest density?

Iron Signup and view all the answers

Why does ice float on water even though liquids generally have lower density than solids?

Ice has a higher density than water Signup and view all the answers

What is the purpose of dissolving salt or sugar in water in the activity described?

To decide about the nature of matter Signup and view all the answers

How does the kinetic energy of particles differ in solids, liquids, and gases?

Gases have the highest kinetic energy Signup and view all the answers

Based on the activity with potassium permanganate crystals, what is the significance of diluting the solution multiple times?

To reduce the concentration of particles in the solution Signup and view all the answers

Which characteristic of matter allows a gas to completely fill the vessel in which it is kept?

Fluidity Signup and view all the answers

In the context of particles of matter, what does it mean when it is mentioned that 'the particles of salt get into the spaces between particles of water'?

Salt particles mix with water particles Signup and view all the answers

Why can we easily move our hand through air but not through a solid block of wood?

Wood has stronger force of attraction between particles Signup and view all the answers

What inference can be drawn from the observation that after multiple dilutions, the water remains colored?

The water has absorbed the color particles Signup and view all the answers

Why is it stated that 'matter is made up of particles' in the context of dissolving salt or sugar in water?

To illustrate how substances spread and mix with each other Signup and view all the answers

How does the activity involving an unlit incense stick relate to understanding the characteristics of particles of matter?

By showing how gases move freely in space Signup and view all the answers

Study Notes

Experiments and Observations

The experiment with potassium permanganate and water demonstrates the concept of dissolution and the ability of particles to spread evenly in a solvent.
The persistence of Dettol's smell even after repeated dilution suggests that particles of the substance are still present, indicating that matter is made up of particles.
The even spreading of ink in water suggests that ink particles are incredibly small and can mix uniformly with water particles.

Particle Properties

The ability of honey to slowly flow in water when added along the sides of a beaker is due to the particles of honey being able to slip past the water particles.
The fact that a drop of ink spreads evenly in water highlights the property of diffusion, which occurs when particles move from an area of higher concentration to an area of lower concentration.

Particle Size and Density

The observation that sugar and salt can dissolve in water suggests that their particles are extremely small.
In a gas, the force of attraction between particles is relatively weak compared to a solid, where particles are closely packed.
The density of a substance depends on the arrangement and size of its particles.

States of Matter

Solids have a fixed shape and volume due to the close packing of particles, while liquids take the shape of their container and gases completely fill their container.
The kinetic energy of particles varies: it is highest in gases, moderate in liquids, and lowest in solids.
Ice floats on water because it has a lower density due to the unique arrangement of its particles.

Dissolution and Diffusion

Dissolving salt or sugar in water allows the particles to spread evenly, demonstrating the concept of diffusion.
The purpose of dissolving substances in water is to illustrate the arrangement and movement of particles.

Gas Properties

Gases can completely fill their container due to the random and rapid motion of their particles.

Particle Movement

When particles of salt get into the spaces between particles of water, it means that the salt particles are moving and spreading evenly throughout the water.
We can easily move our hand through air because gas particles have a lot of space between them, but not through a solid block of wood because its particles are closely packed.

Inferences and Conclusions

The fact that water remains colored after multiple dilutions suggests that particles of the substance are still present, demonstrating the concept of dissolution.
The activity with the unlit incense stick helps illustrate the characteristics of particles of matter, specifically their movement and arrangement.

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Description

Participate in an experiment to estimate the size of particles in matter involving the observation of incense stick smell, dilution color change, and potassium permanganate crystal dispersion. Record your observations and learn about the characteristics of matter.

Science Experiment: Estimating the Size of Particles in Matter