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States of matter (Copy diagram of particles in notes)

States of matter (Copy diagram of particles in notes). State is an important property of matter. There are three states of matter and substances change state based on the amount of energy that their particles have. Particles in a solid.

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States of matter (Copy diagram of particles in notes)

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  1. States of matter (Copy diagram of particles in notes) State is an important property of matter. There are three states of matter and substances change state based on the amount of energy that their particles have.

  2. Particles in a solid • Are in fixed position (cannot change places) but do have space between the particles. • Are moving, but vibrate very slowly because they have very little energy • Do not take the shape of their container

  3. Particles in a liquid • Can change places (move freely) and have more space between the particles • Are moving faster than the particles of a solid but not as fast as a gas. • Can not be compressed. (not enough space) • Self – leveling and take the shape of the container.

  4. Particles in a Gas • Can change places and has the most space between the particles • Have the most energy and are moving the fastest of the three states • Take the shape of the container and can be compressed.

  5. Change of State Terms. (Add to diagram from earlier) • Melting: Going from a solid to a liquid. Energy is gained by particles • Freezing: Going from a liquid to a solid. Energy is lost by particles • Evaporation: Going from a liquid to a gas. Energy is gained by particles

  6. Condensation: Going from a gas to a liquid. Energy is lost by particles • Sublimation: Going directly from a solid to a gas. Energy is gained by particles • Deposition: Going directly from a gas to a solid. Energy is lost by particles.

  7. Classification of Matter • All matter can be classified into two broad categories. • 1. Pure Substances – All particles are identical eg. H2O, Oxygen, Carbon Dioxide etc… • 2. Mixtures – Particles are not all identical, different ratios or amounts. Eg. Air, Chocolate chip cookies, iced tea.

  8. Pure Substances All pure substances can be divided into two categories – Elements and Compounds. • Element - Made up of identical particles. eg Oxygen, Hydrogen, Carbon • Compound - made up of two or more different particles arranged in a definite fixedratioor set proportion. eg Water, Carbon dioxide, etc...

  9. Mixtures There are four categories of mixtures. 1. Solution - homogeneous mixture - looks like one substanceeg. Air, salt water, koolaid, alloys - two metals together that look like one. eg - brass 2. Mechanical mixture - heterogeneous state where you can see different parts eg. cement, granola, cookie dough

  10. Suspension - A cloudy mixture where tiny particles of one substance are held by the other but can be removed by filtration. egtomato juice, pulp 4. Colloids - A cloudy mixture where the particles can not be removed byfiltration. eg. milk

  11. Work on Unit B – topic 1 handout • Work on Topic 1 review – Page 98. • Reminder of Safety Symbols Quiz tomorrow.

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