States of Matter
The particles in this state of matter are close together and vibrate in place.
What is a solid?
The process of a liquid turning into a gas at its boiling point.
What is boiling?
The amount of space an object takes up.
What is volume?
The movement of particles from an area of high concentration to low concentration.
What is diffusion?
The force exerted by gas particles when they collide with a container.
What is pressure?
The particles in this state of matter are far apart and move freely.
What is a gas?
The process of a gas turning into a liquid when cooled.
What is condensation?
The amount of matter in an object.
What is mass?
Diffusion happens faster in gases than in liquids for this reason.
What is because gas particles move faster and are more spread out?
What happens to the motion of particles when a substance is cooled?
What is they move slower?
The particles in this state of matter are close together but can move past each other.
What is a liquid?
The process where a solid turns directly into a gas without becoming a liquid first.
What is sublimation?
The measure of how heavy something is for its size.
What is density?
A student notices that she can smell the bins more easily on a hot day than on a cold day. Explain why.
What is because heat makes particles move faster, increasing diffusion?
What happens to the motion of particles when a substance is heated?
What is they move faster?
This state of matter takes the shape of its container but has a fixed volume.
What is a liquid?
A student notices that a puddle disappears on a hot day. He thinks the water has boiled. Explain what process actually happened.
What is evaporation?
Tin has a higher density than helium. Using the particle model, explain why.
What is because tin's particles are packed closer together than helium’s?
The reason why steam (water as a gas) fills any container it is placed in.
What is because gas particles move freely in all directions?
Compare the arrangement and movement of particles in solid iron and liquid iron.
What is solid iron has particles in a fixed pattern that vibrate, while liquid iron’s particles move past each other?
This table shows the melting and boiling points of oxygen (-219°C, -183°C) and silver (962°C, 2212°C). At room temperature, oxygen is in this state.
What is gas?
The process of solid ice turning into liquid water.
What is melting?
Iron melts at a higher temperature than silver because of this property of its particles.
What is stronger forces of attraction between iron particles?
The reason why a gas expands when heated.
What is because its particles move faster and spread out?
The reason why a balloon expands when heated.
What is because gas particles move faster and push outward?