MINI quiz Review: 1) All matter is made up of. 2) All particles in a substance are the same. 3) There is between the particles.
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1 MINI quiz Review: 1) All matter is made up of. 2) All particles in a substance are the same. 3) There is between the particles. 4) The particles are always. 5) The particles in a substance are to one another.
2 Particle Theory of Matter The five major points of the particle theory of matter are: 1. All matter is made up of very small particles. 2. All particles in a pure substance are the same. Different substances are made of different particles. 3. There is space between the particles. 4. The particles are always moving. As the particles gain energy, they move faster. 5. The particles in a substance are attracted to one another. The strength of the attractive force depends on the type of particle.
3 P You may also use the glossary in the back of the textbook. boiling boiling point change of state condensation deposition evaporation fluid freezing point gas liquid melting melting point particle theory of matter solid solidification sublimation
4 Boiling: rapid vaporization ( from l g) boiling pt of three substances
5 Boiling point: exact temperature at which a liquid turns to gas boiling pt of three substances
6 Change of State: Occurs when a substance changes from one state to another.. Not a chemical change but a physical change, ex. Ice (solid), water (liquid) and steam (gas) are all still H2O!!!
7 Change of state (see fig 7.4) Occurs when the physical state of a substance is transformed from another state. Simulation: PhEt
8 Condensation: Video from gas to liquid
9 Deposition: from gas to a solid (skips liquid state)
10 Evaporation: from liquid to a gas TRICK question...boiling water: Can you see the gas here?
11 Fluid A fluid is defined as anything that flows, such as gases and liquids. BROMINE GAS POURED OUT OF BEAKER
12 Freezing point: temperature at which substance from l s. Casting a Fire Ant Colony with Molten Aluminum Another one and another one... Why do you think he used Aluminium? 2 reasons
13 Gas: Gas is the state of matter that has its volume and shape determined by its surroundings Ex: helium in a balloon, air in bicycle tires, oxygen in a tank
14 Liquid: Liquid is the state of matter that has a definite volume, but its shape is determined by its surroundings Ex: Mercury in a beaker, coffee in a cup, juice in a pitcher
15 Melting: from solid to liquid
16 Melting point: temperature at which substance from s l. Inductively Heating Steel to Melting Point Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, through heat generated in the object by eddy currents. An important feature of the induction heating process is that the heat is generated inside the object itself, instead of by an external heat source via heat conduction. electromagnet, and an electronic oscillator that passes a high-frequency alternating current (AC) through the electromagnet. the rapidly alternating magnetic field penetrates the object, generating electric currents inside the conductor called eddy currents.
17 Particle Theory of Matter The five major points of the particle theory of matter are: 1. All matter is made up of very small particles. 2. All particles in a pure substance are the same. Different substances are made of different particles. 3. There is space between the particles. 4. The particles are always moving. As the particles gain energy, they move faster. 5. The particles in a substance are attracted to one another. The strength of the attractive force depends on the type of particle.
18 Solid: Solid is the state of matter that has a definite shape and volume Ex: a piece of paper, grain of sand Ice cube Solid carbon dioxide is called dry ice it became solid when carbon dioxide is froze when the temperature reach degree Celsius.
19 Solidification: from liquid to solid What is the key factor here?
20 Sublimation: solid to gas (*skips liquid stage) elemental iodine (Also shows reverse process - deposition, next slide) Another example: dry ice ( a frozen chunk of carbon dioxide is exposed to heat and rapidly gives off a thick cloud of fog (the fog you see is actually water that forms on the cold CO2 gas) Also in the spring sublimation occurs with the snow/ice and heat going directly to gas/water vapor.
21 Please draw, p 272 Changes of State Homework: Checking concepts: p 274 Q 2-5
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