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7G Particle model
Key words
Term | Definition |
---|---|
Property | Description of a substance, characteristic |
Gas | No fixed shape or volume. Easily squashed. |
Liquid | Fixed volume, but no fixed shape |
Solid | Fixed volume and fixe shape |
Acid rain | Rain with pH of less than 5.6 |
Corrosive | Chemicals that react with metal, stone and skin |
Compressed | Made into a smaller volume |
Cubic centimeter | Equal to a millimeter (cm3 = mL) |
Flammable | Can be set on fire |
Flow | Can move and change shape |
Hazard | Can cause harm |
State of matter | Solid, liquid or gas |
Toxic | Poisonous |
Volume | The space it takes up |
Particle theory | Using particles to explain scientific phenomena |
Particles | Tiny pieces that make up matter |
Random | No regular pattern |
Brownian motion | Small pieces of matter that are moved by small particles of a liquid or gas |
Nanometers | 1 000 000 000 times smaller than a meter (nm) |
Nanoscale | Measured in nm |
Diffusion | Movement of particles from high to low concentration |
Air pressure | Force on an area from air molecules hitting it |
Vacuum | Space with no gas particles |
Composting | Allowing plant material to form soil |
Incineration | Burning waste |