Question: What is matter made up of?
Answer: Particles
Explanation: Matter consists of tiny particles that are too small to be seen with the naked eye but can be observed through experiments.
Question: What happens when a substance dissolves in water?
Answer: Diffusion
Explanation: When a substance dissolves, its particles spread and mix with the water particles, showing the concept of diffusion.
Question: Which experiment is used to demonstrate the small size of particles in matter?
Answer: Dilution
Explanation: The dilution experiment with potassium permanganate shows how a small number of particles can color a large volume of water.
Question: What property of matter allows particles to dissolve in another substance?
Answer: Solubility
Explanation: Solubility is the ability of a substance to dissolve in a solvent, which depends on the small size of its particles.
Question: What is the main reason we cannot see particles of matter individually?
Answer: Small size
Explanation: Particles of matter are extremely small, making them invisible to the naked eye but detectable through experiments.
Question: What spreads evenly when sugar is dissolved in water?
Answer: Particles
Explanation: Sugar particles distribute uniformly in water without changing the water level, proving the particulate nature of matter.
Question: What type of motion do particles of matter exhibit?
Answer: Random
Explanation: Particles move randomly in all directions due to their continuous motion, as observed in diffusion experiments.
Question: What experiment uses potassium permanganate to demonstrate particle size?
Answer: Serial dilution
Explanation: Serial dilution shows that even a few crystals of potassium permanganate can color a large volume of water due to the small size of its particles.
Question: What do the particles of matter do in an empty space between other particles?
Answer: Intermix
Explanation: Particles intermix and occupy the empty spaces between other particles, which allows substances to dissolve.
Question: What physical property of matter explains why a small amount of Dettol can spread throughout water?
Answer: Diffusibility
Explanation: The high diffusibility of matter allows even a few drops of Dettol to spread and be detected in water
