What is the MATTER? On earth A. B. C. ????? What in the world is matter? Matter is… A. Anything that moves B. Anything that takes up space. C. Something that cries. Anything that takes up space! The types Of matter are… Solids Liquids Gases How does matter change? Put on your thinking cap! Changes of state solid melting boiling liquid gas freezing condensing Changes of state – heating curve boiling liquid gas melting solid liquid condensing freezing time Changes of state – cooling curve activity Changes of state activity TIME FOR A SONG The particle model 1. All substances are made up of particles (atoms, ions or molecules). 2. These particles are attracted to each other, some strongly and others weakly. 3. These particles move around (i.e. have kinetic energy). 4. The kinetic energy of particles increases with temperature. Temperature and energy What is evaporation? Evaporation occurs when the particles in a liquid escape to form a vapour. Evaporation can occur at any temperature but it occurs most rapidly at a liquid’s boiling point. The particles that escape take some energy from the remaining particles and so the temperature of the liquid falls.
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