Chapter 2/13 – Flashcards
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| Mixtures are seperated by... |
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| Physical means. |
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| The 4 ways mixtures can be seperated are... |
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| By, magnet, filtration, evaporation, and disilation are means that --- can be seperated? |
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| What type of properties do pure substances have? |
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| Definte properties are that of what? |
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| Pure substance composition is... |
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| Regular using one symbol or formula compostion is that of... |
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| A heterogenous mixture means... |
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| this mixture is different. |
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| a homogenous mixture means.. |
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| This mixture is the same. |
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| A heterogenous mixture's compostions is... |
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| non-uniform, uneven. This is the compostion of ... |
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| A homogenous micture's compostions is |
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| evenly distrubuted is the compostion of... |
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| A solution is... |
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| When something dissolve in a solvent is called? |
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| Elements are... |
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| The simplest form of matter - cannot be seperted even by chemical reaction. |
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| Elements are definted as... |
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| Teh building blocks for all other substances are the... |
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| Compunds are... |
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| 2 or more elements chemically combined. |
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| How can compunds be broken down? |
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| By chemical means only these can be what? |
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| Compounds are difned as... |
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| a chemical formula with its own unique properties. |
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| Physical Property |
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| A quality or condition that can be observed or measured without changing the substance's compostion. |
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| A physical property consists of what? |
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| Mass, volume are in what? |
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| Chemical Property |
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| The ability of a substance to undergo chemical reactions and form new substances. |
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| Chemical Change |
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| One or more substances changing into new substances. |
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| Reactants convert to... |
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| products convert to... |
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| What are four indicators of a chemical change? |
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| Colour change, Formation of a solid, evolution of gas (bubbles), change of energy (temperature) are all indicators of what? |
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| The Conservation of Mass states... |
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| In physical or chemical reactions, mass can neither be created nor destoryed is what? |
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| The Kinetic Theory of gases is composed of... |
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| Small particles whose size is insignificant to volume occupied composes what? |
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| Equal volume of gas means... |
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| equal number of gas particles mean... |
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| Gas particles are always... |
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| in constant random motion (diffusion) what do this? |
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| A particle's motion is... |
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| The motion of a --- is in a straight line and only changes when it collides. |
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| Gas particle collisions are what? |
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| Perfectly elastic are the what? |
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| Gas Pressure |
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| The force exerted per-unit surface area is what? |
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| Gas Pressure is due to... |
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| Collisions of billions of molecules cause... |
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| Vacuum |
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| No praticles, no collisons, no pressure. |
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| Atompheric pressure is due to... |
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| Collisions of air molecules with objects is called what? |
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| Atmospheri pressure is measured with... |
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| a barometer measures... |
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| Wet air is lighter because |
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| of the water vapour in wet air makes it... |
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| Pascal (Pa) |
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| SI Unit of Pressure |
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| 1 atm = ...kPa |
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| 101.3 kPa = ...atm |
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| 1 atm = ...mmHg |
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| 760 mmHg = ...atm |
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| 1 atm = ...PSI |
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| 14.7 PSI = ...atm |
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| Average kinetic energy determines... |
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| The tempertaure of a substance is determined by the --- of the particles. |
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| Substances at the smae temperature have the same kinetic energy regardless of phase because |
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| Having the same temperature means the kinetic energy is... |
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| No Kinetic Engery at... |
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| 0 Degrees Kalvin ABSOLUTE ZERO |
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| Kinetic Energy is based on what scale? |
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| The Kalvin scale bases... |
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| Liquid particles are... |
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| close together are the particles of... |
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| In liquids the force is... |
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| Weak attractive forces in what? |
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| Liquid particles can move how? |
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| Paritcles are able to move past eachother and flow in... |
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| Vapourization is... |
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| liquid to gas is... |
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| When boiling the pressure is... |
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| Liquid pressure = outside pressure when doing what? |
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| Evaporization takes place at... |
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| the surface only is the place that... takes place. |
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| Evaporization pressure goes... |
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| Temperature goes down during --- |
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| Vapour pressure is measured with... |
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| a manometer measures... |
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| When particles evaporate, vapor pressure.... |
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| Building up and then eventually reaching equilibrium is what --- does |
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| Dynamic equilibrium can be defineded by |
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| The rate of condensation = rate of vapourzation summarizes... |
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| The force of the particles of a solid are... |
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| Strong attractive forces between particles with no flow describes... |
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| Most solids are what is shape? |
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| Crystalline in shape are... |
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| Crystals are arranged in... |
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| An orderly repeatable 3D pattern are that of... |
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| Unit Cell |
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| The smallest group of particles in crystal that retains its shape. |
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| Allotropes |
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| Two or more structural forms of the same element. |
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| Carbon would be an example of... |
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| An example of an allotropes would be... |
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| Amorphous |
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| Solids that are not crystalline in shape. |
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| Rubber, plastic, and asphalt are examples of... |
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| Some examples of amorphous solids would be... |
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