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Details Title: Lesson 2 Description: vocabulary + concepts Total Flash Cards: 19 Created: 08/26/2008 07:09:38	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Hypothesis Definition a good guess of what could happen in a experiment. Term Three States of Matter Definition Solid, Liquid, Gas Term Particles of Matter Definition " particles of matter that are in motion,(moving)"     Term Solid Definition Has a definite shape and volume examples of solids are, wood, ice, tables, desks Term Solid particles Definition are packed tightly together to form a more stronger bond Term Liquid Definition Has a definite volume, but no shape. Takes on the shape of the container its poured into. Examples of liquids are, water, milk. Term Liquid particles Definition move easily to slide past each other, example- water, milk, Term Gas Definition Does not have a definite shape or volume examples,-air,steam Term gas particles Definition are the least packed together-there freer to move around example-air, helium Term Evaporation Definition the process by which a liquid becomes a gas without boiling  examples of this would be,-sun, wind Term Condensation Definition Changes a substance from a gas back into a liquid. examples of this would be- dew, water droplets on a cold soda can. Term SUBLIMATION Definition IS A CHANGE IN STATE FROM A SOLID TO A GAS.   EXAMPLE-DRY ICE IS SOLID CARBON DIOXIDE- WHEN EXPOSED TO WARM AIR  FORMS A COLD GAS THAT LOOKS LIKE SMOKE- (WITHOUT MELTING) Term Boiling point Definition This is the temperature at which a substance that is placed over heat now, changes from a liquid to a gas. Term Melting Point + Freezing Point Definition Melting point- is where any object goes from a solid to a liquid.   Freezing point- is where an substance goes from a liquid to a solid.    The melting point and freezing point of any substance are the same. Term physical properties Definition characteristics of a substance that can be seen or measured without changing the substance into something else Term Chemical CHANGES Definition CHANGES IN WHICH ONE OR MORE NEW SUBSTANCES ARE FORMED EXAMPLES,- BURNING, RUSTING,   Term Combustility Definition how a substance characteristics, can be identfied by,the color of there fame while burning. examples-sodium,-yellow flame, potassium-purple flame. Term REACTIVITY Definition THE ABILITY OF A SUBSTANCE TO REACT TO CHEMICALLY Term lAW OF CONSERVATION OF MATTER Definition MATTER IS NEITHER CREATED OR DESTROYED DURING A PHYSICAL OR CHEMICAL CHANGE.