Characteristics of particles in the three states of matter Practice exercise 7

A cube of wood and a sponge are pressed using the same force. The sponge changes shape but the wood does not. Use particle theory to explain this difference.   (1 mark)

A cube of wood and a sponge are pressed using the same force. The sponge changes shape but the wood does not. Use particle theory to explain this difference.   (1 mark)

A cube of wood and a sponge are pressed using the same force. The sponge changes shape but the wood does not. Use kinetic theory to explain this difference.   (1 mark)

After boiling water to cook ugali, Fatuma notices water droplets forming on the kitchen window near the pot. Use particle theory to explain why this happens.   (1 mark)

After boiling water to cook ugali, Fatuma notices water droplets forming on the kitchen window near the pot. Use particle theory to explain why this happens.   (1 mark)

A pupil adds 10 spoonfulls of salt to water and stirs. At first, the salt dissolves, but later some salt remains at the bottom. Use particle theory to explain why this happened.   (1 mark)

A pupil adds 10 spoonfulls of salt to water and stirs. At first, the salt dissolves, but later some salt remains at the bottom. Use particle theory to explain why this happened.   (1 mark)

The image below shows water droplets forming on a cold glass cover above boiling water. Explain this observation using particle theory.   (1 mark)

The image below shows water droplets forming on a cold glass cover above boiling water. Explain this observation using particle theory.   (1 mark)

A gas cylinder leaks in one corner of the kitchen. After a short time, someone in the living room smells it. Use particle theory to explain how the smell travelled.   (1 mark)

A gas cylinder leaks in one corner of the kitchen. After a short time, someone in the living room smells it. Use particle theory to explain how the smell travelled.   (1 mark)

The diagram below shows particles in a gas. In a closed bottle of perfume, the scent isn’t smelled. But once the cap is removed, the scent reaches the back of the room. Use the diagram and particle theory to explain this.  (2 marks)

The diagram below shows particles in a gas. In a closed bottle of perfume, the scent isn’t smelled. But once the cap is removed, the scent reaches the back of the room. Use the diagram and particle theory to explain this.  (2 marks)

The diagram below shows particles in a gas. In a closed bottle of perfume, the scent isn’t smelled. But once the cap is removed, the scent reaches the back of the room. Use the diagram and particle theory to explain this.  (2 marks)

The diagram below shows particles in a gas. In a closed bottle of perfume, the scent isn’t smelled. But once the cap is removed, the scent reaches the back of the room. Use the diagram below and particle theory to explain this.  (2 marks)

During a science trip to Naivasha, a sealed plastic water bottle is taken from the cool forest into the hot sun. After some time, the bottle bulges. Explain this observation using particle theory.    (2 marks)

During a science trip to Naivasha, a sealed plastic water bottle is taken from the cool forest into the hot sun. After some time, the bottle bulges. Explain this observation using particle theory.    (2 marks)

A balloon is filled with air and tied tightly. After a few days, it appears smaller. No holes are visible. Use particle theory to explain what happened.   (2 marks)

A balloon is filled with air and tied tightly. After a few days, it appears smaller. No holes are visible. Use particle theory to explain what happened.   (2 marks)

A student in Kakamega notices that her soda bottle feels flat after being left open for a few hours. Use particle theory to explain what happened.  (2 marks)

A student in Kakamega notices that her soda bottle feels flat after being left open for a few hours. Use particle theory to explain what happened.  (2 marks)

A gas cylinder is leaking slowly in a closed room. After 10 minutes, someone at the far corner starts coughing from the smell. Use the kinetic theory of matter to explain how the gas spread across the room. (2 marks)

A gas cylinder is leaking slowly in a closed room. After 10 minutes, someone at the far corner starts coughing from the smell. Use the kinetic theory of matter to explain how the gas spread across the room. (2 marks)

A gas cylinder is leaking slowly in a closed room. After 10 minutes, someone at the far corner starts coughing from the smell. Use the kinetic theory of matter to explain how the gas spread across the room. (2 marks)

A gas cylinder is leaking slowly in a closed room. After 10 minutes, someone at the far corner starts coughing from the smell. Use the kinetic theory of matter to explain how the gas spread across the room. (2 marks)