What is a solid?
- Defining a Solid
A solid is a shape of matter that keeps its shape and has a fixed volume.
- Key features
Solids are hard to squash (compress). They don’t flow or spread out like liquids pr gases
In Te Reo Māori, totoka means solids.
Particle model of solids
- How do solids hold their shape?
In a solid, particles are packed closely together in a fixed arrangement.
They vibrate but do not move from their places. This is why solids are rigid and strong.
Properties of solids
- Fixed Shape: Solids do not change shape unless you force them. They are hard to bend or stretch.
- Fixed Volume: Solids keep the same amount of space. They do not expand to fill a container.
- Hard to Compress: You cannot squash a solid easily because its particles are tightly packed.
How to Identify Solids
Look at its shape: Does it keep its shape when moved or left alone?
Check its volume: Does it always take up the same amount of space?
Try compression: Is it difficult to squash or squeeze?
QUESTIONS!!
Question 1:
What is the Te reo Māori term for a solid? Totoka
Question 2:
Name two key properties that all solids share. Fixed Shape and Fixed Volume
Explain why it is difficult to compress a solid. Because a solid is made up of little particles tightly pressed together. The force holds the particles in place, keeping the solid’s volume and shape.