Particles
What are the tiny building blocks of matter?
What are atoms?
What is a property that can be observed in solids?
They have a definite shape and volume.
What is a model?
A representation of an object or concept.
What are the three main states of matter?
What happens when particles collide?
They can transfer energy and change direction.
How small are particles compared to what we can see?
They are too small to be seen with the naked eye.
How does temperature affect particle movement?
Higher temperatures increase particle movement.
Why do scientists use models to explain matter?
To visualize and understand concepts that are difficult to see directly.
What state of matter has a definite shape?
Solid
How do particles in a gas interact with each other?
They move freely and collide with each other and the walls of their container.
Name a state of matter that has tightly packed particles.
Solid.
What is the difference between a mixture and a compound?
A mixture is a combination of substances that can be separated, while a compound is a substance formed when two or more elements chemically bond.
Name one way to represent particles in a model.
Using spheres or dots to represent atoms.
How do particles in a liquid behave?
They are close together but can move past each other.
What causes a solid to turn into a liquid?
Heating the solid increases particle movement until they can slide past each other.
What happens to particles in a solid when it is heated?
They move faster and may eventually turn into a liquid.
Describe how you can tell a liquid is made of particles.
Liquids take the shape of their container but have a definite volume.
How can a drawing help us understand matter?
It can illustrate how particles are arranged or interact.
Which state of matter can fill any container?
Gas
Describe what happens to particles when they freeze.
They slow down and arrange themselves into a fixed, orderly structure.
Describe what happens to gas particles when they are compressed.
They are pushed closer together and can increase in temperature.
Explain how particles behave in a gas compared to a liquid.
Gas particles move freely and are far apart, while liquid particles are closer and slide past each other.
Describe how a 3D model of particles might look.
It could show particles as balls connected by lines to represent bonds.
Explain how water can exist in all three states.
Water can freeze to become ice (solid), boil to become steam (gas), or stay as liquid water.
How do temperature changes affect particle interactions?
Increasing temperature makes particles move faster, while decreasing temperature slows them down.