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- Good day Grade 8!are you ready for the fun?
- Today lets discuss about the 3 states of matter the Solid, Liquid, Gas based on the particle nature of matter
- Hey Bob! It feels nice being a solid. Did you know that when you're a solid the molecules are very close together and barely move.
- Hello there Sugar! How does it feel being a solid?
- Oh, hey Bob. Well you see the house was at a warm temperature so i melted into a liquid.
- Now my molecules are moving around a little bit. My molecules are interacting with each other but their bonds aren't connected.
- Sugar? You aren't solid ice anymore. How is that possible?
- Hi! This is Bob the Water droplet. He is going to be with us in our journey about learning the properties of matter
- What!? Sugar now you're steam. How?
- Well, Bob I evaporated into steam. It's the last state of matter, remember.
- But technically plasma is the final state of matter.
- The states of matter have to do with how the molecules interact with each other. The molecules in the solids are very closely packed together and there is much less kinetic energy. This means that the bonds of the molecules are still connected.
- That was fun wasn't it. Learning about the states of matter. Now let's do a recap on the properties of matter.
- The second property of matter is Physical properties.
- Solid was turned into liquid because the warm temperature melted the solid ice. It increased the energy which now caused the molecules to separate from the bonds and move around. Liquid is much more dense than solid. Also liquid has an indefinite shape.
- Physical Properties
- Some of the physical properties are color, odor, density.
- The liquid evaporates into vapor or steam known as a Gas. The energy is greater in a gas because the molecules are freely moving around fast. Gas has an indefinite shape and volume.
- Solids – relatively rigid, definite volume and shape. In a solid, the atoms and molecules are attached to each other.Liquids – definite volume but able to change shape by flowing. In a liquid, the atoms and molecules are loosely bonded.Gases – no definite volume or shape.
- Physical properties are any materials characteristics without the identity of the substance changing. For example, a leaf changing colors in the fall. The leaf stays the same just the color changes. The solubility curve represents the saturation point of the solute at increasing temperature.
- Color
- Ice turning into water
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