# Unit 1

 What are the four states of matter? SolidLiquidGasPlasma What is density? Density is how close the atoms are; the mass per volume. What is compressibility? Compressibility is the ability to squish matter into a smaller space. What is diffusion? Diffusion is the ability to of the atoms to move away from other atoms. What is the solid's volume, shape, density, compressibility and diffusion? definite VOLUMEdefinite SHAPEhigh DENSITYlow COMPRESSIBILITYlow to none DIFFUSION What is the liquid's volume, shape, density, compressibility and diffusion? definite VOLUMEno definite SHAPEmedium DENSITYslight COMPRESSIBILITYmedium DIFFUSION What is the gas' volume, shape, density, compressibility and diffusion? no definite VOLUMEno definite SHAPElow DENSITYhigh COMPRESSIBILITYhigh DIFFUSION what is plasma? - It's considered to be the fourth state of matter- most abundant state in the universe, less abundant in Earth- Ionized gases, extremes of gas properties and positive ions Rank solid, liquid, gas and plasma from the strongest to weaker IMFs. SolidLiquidGasPlasma What are molecules, atoms and ions? molecules - tow or more atoms stuck togetheratoms - smallest unit of lifeions - charged atoms What explains/describes the movement of molecules, atoms and ions? KMT or kinetic molecular theory FILL IN THE BLANK: KMT explains the behaviour of _______ the best because it has ________ IMFs. It does not explain the behviour of _______ and ______ very well. gaslittle to nosolidliquid What is the kinetic molecular theory? (4 points) - All matter is made up of small particles- These particles are in constant random, straight line motion. It bounce off each other and the container wall molecules.- The bouncing collisions between particles are perfectly elastic.- The kinetic energy of particle determine the speed or movement of that particle. We measure K.E. using temperature. What are the two types of solid? Amphorous solidsCrystalline solids What are the four types of crystalline solids? Covalent- network IonicMolecularMetallic What is an amphorous solid? a type of solid that don't have any pattern or arrangement. What is a crystalline solid? It has a distinct repeating pattern of particles. What makes up a covalent-network? one type of non-metal atom What makes up an ionic bond? non-metal and metal what makes up a molecular solid? 2 or more non metals What makes up a metalic solid? metals From strongest to weakest, rank the types of crystalline solids. Metallic solidCovalent/IonicMolecular Authormcortes ID65781 Card SetUnit 1 DescriptionTest and Exam review Updated2011-02-12T03:05:14Z Show Answers