From Particles to Solutions Section 5.1

The Particle Theory of Matter All matter is made up of different kids of particles Different substances are made up of different types of particles Particles are in constant random motion Particles move faster when heated, and slower when cooled Particles attract each other

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Pure Substances Made up of only one type of particles Any element from the Periodic Table Any compound (like distilled water, carbon dioxide)

Mixtures Made up 2 or more types of particles Mechanical mixture – you are able to see the different particles (pizza, oil and vinegar, cereal) Solution – a mixture where you can’t see the different particles (apple juice, air in this room)

Alloys Special mixtures of metals. Bronze – tin and copper Brass – zinc and copper 14 karat yellow gold – gold, silver, copper, zinc Solder – lead and tin

Today’s Task Alloy Demo (in small groups at the back of the room) Pg. 178 #2 -8