Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Matter Notes What is chemistry?__________________________________________________________________ Name some types of chemistry?__________________, _________________, ___________________, _____________________, _________________ Why is chemistry important?___________________________________________________________ ___________________________________________________________________________________ Matter is anything that has ____________ and __________________ Mass and Weight differ in that ______________ depends on gravity. States of Matter Solid Liquid Gas Holds shape Fixed volume Particles arranged in a rigid pattern Relatively strong forces of attraction between particles Energy is the ability or ____________ to do work. It is associated with _____________. Some types are: _________________, heat, radiant, chemical, ________________, and electrical. It can be ____________________ from one type to another. Energy transformation example: Nuclear energy changes to ____________ energy which is used to form _________________ energy and finally electrical energy. Temperature: is measuring a systems ability to ____________________ or acquire heat and is NOT dependent on the amount of matter present. It is equal to the average kinetic ______________ of the particles in a sample. It is measured with a ____________________ in units _______, ________, or _________________. Please complete the following table as a temperature problem review: Heat vs. Temperature: Heat is a form of ______________________ that IS mass and temperature dependent. It is measured indirectly using a _____________ calorimeter in units such as ____________ or _______________. Example of difference (circle the one with more heat) 1 drop of water vs. 1 five gallon pot of water both at 100 degrees Ways that heat can be transferred (draw the picture from the notes!): Convection:_______________________ Radiation:_________________________ Conduction:________________________ A physical property is a property that can be observed or measured without ________________ the composition or identity of the matter. Examples: color, ______________, size, texture, viscosity, length, mass, boiling point, _________________, D______________, and solubility A chemical property is a property that can be observed only when substances ___________________ with one another. Identities ARE ___________________. Examples: iron + oxygen = ____________ K + water = _______________ Physical Changes: involve _____________, do not affect ________________ properties. The identity of the matter does not __________________ and it is usually easy to reverse. Chemical Changes: involve _____________ usually to a greater extent than a physical change. The identity of reactants does _______________. Not always easy, or even possible, to ______________. Endothermic: products have ____________ energy. Reaction in which energy is absorbed. REACTANTS PRODUCTS + ENERGY THAT IS RELEASED Exothermic: products have less energy. Reaction in which energy is _____________________. REACTANTS + ENERGY THAT IS ABSORBED PRODUCTS Physical Change or Chemical? a. ice melting___________________ b. bumper rusting _________________ c. heating up soup ________________ d. baking cookies __________________ e. vaporizing gas then burning it as you drive to school_____________________ Conservation of Mass:_________________________=________________________________ Conservation of Energy:________________________= _______________________________ Matter Categories: If your sample of matter can be physically separated into different parts it is a ______________. If not, it is a ____________________________. Let's start with Homogeneous Mixture Heterogeneous Mixture consists of __________ or more distinct physical _____________ or _______________ fairly easy to physically separate into its ______________ components by _______________, filtering, distilling, etc. examples: uniform in composition and _______________ throughout a.k.a. as a _______________ a physical mixture in which each component keeps their individual _________________ but they may blend examples: Pure Substances: consists of only _______kind of matter cannot be _____________ physically, only ______________, or not at all. Compounds: made up of ________ of two or more elements that are _____________ bonded. components lose their ____________ identity Evidence of chemical change in production:___________________ ____________________________ ____________________________ example rx:___________________ Elements: 92 natural + manmade made up of only ________ kind of ____________ cannot be simplified used as building blocks for all other matter examples:_________________ _________________________ diatomic examples:__________ _________________________ _ Law of Definite Composition:____________________________________________________ example: Law of Multiple Proportions:_____________________________________________________ example: Classes of elements: Metals (found on the ___________________ of the periodic table). Characteristics: luster, conductors of _________ and ___________________, ductile, ____________________ and ________________ Nonmetals (found on the upper ____________ side of the periodic table) Characteristics: tend to be dull, ____________ conductors, solids are ____________________, many are ___________ or __________ at room temperature Metalloids (found along stair step – only ____________ of them) Characteristics: _______________________________________________ All six examples: __________________, ____________________, _________________, ___________________,____________________,__________________ Symbols and Formulas: First example H3PO4: has ______________ H, has _________P, and ________________O Second example Mg(OH)2 has ___________Mg, has ___________O, and _____________H You try a few more: NaCl_______________________H2SO4_______________________ Ca(NO3) 2______________________________________________ N2________________________ CaBr2______________________ (NH4) 2NO3____________________________________________