Solid
This state of matter has a fixed shape and volume. It is made up of closely packed particles that vibrate in place.
What is a solid?
The state of matter that has a definite volume but takes the shape of its container.
What is a liquid?
The state of matter that has no definite shape or volume and expands to fill its container.
What is a gas?
What is melting?
Melting is the process in which a solid changes into a liquid when heat is added.
When thermal energy increases, a solid turns into what state of matter?
liquid
Name one example of a material that is always solid at room temperature.
What is ice, wood, iron, etc.?
Name one example of a material that is liquid at room temperature.
What is water, milk, oil, etc.?
Name one material that is a gas at room temperature.
What is oxygen, carbon dioxide, helium, etc.?
Freezing is the process in which a liquid changes into a solid when heat is removed.
When thermal energy increases liquids turn into what state of matter?
Gas
Draw an example of particles in a solid. Be sure to show speed and direction.
Particles should be close together. Arrows are used to show movement. They are short and show that particles are vibrating in place.
Draw an example of particles in a liquid. Be sure to show speed and direction.
The particles are spaces out filling the bottom of the space. The arrows used to show movement are medium length and show the particles moving around the bottom of the space.
Draw an example of particles in a gas. Be sure to show speed and direction.
Particles are drawn randomly filling up the whole space. The arrows used to show movement are long to show the particles are moving quickly and in every direction.
What is evaporation?
Evaporation is the process by which liquid turns into gas when heat is added.
When thermal energy decreases gas turns into what state of matter?
Liquid
How does adding heat change a solid’s particles movement?
Adding heat makes the particles vibrate faster and spread out which can eventually cause the solid to melt into a liquid.
Why are liquids able to flow more freely than solids?
Liquid particles are close together but not fixed in place, allowing them to move past each other.
What happens to gas particles when they lose energy and cool down?
They slow down and come closer together, forming a liquid through condensation.
What is condensation?
Condensation is the process by which gas turns into liquid when heat is removed.
When thermal energy decreases liquid turns into what state of matter?
solid
What happens at the melting point of a solid?
At the melting point, particles in a solid gain energy to break away from each other and flow as a liquid.
How do liquids change to gases?
Liquids change to gases through the process of evaporation when energy is added, increasing the temperature.
How do gases change to liquids?
Gases change to liquids through the process of condensation when energy is removed, decreasing the temperature.
What makes solid water particles different from other solid material particles?
Soid water particles are arranged in a hexagon shape. This creates air pockets that allow solid water to float in liquid water.