A. MATTER * Nature of matter. * Describe the states of matter and explain their conversion in terms of the kinetic particle theory. * Describe and explain diffusion. * Describe dependence of rate of diffusion on molecular mass‚ qualitatively. * Experimental techniques Measurement. * Name appropriate apparatus for the measurement of time‚ temperature‚ mass and volume‚ including burettes‚ pipettes and measuring cylinders. Criteria of purity. * Identify substances
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Analytical chemistry Analytical chemistry is the branch of chemistry that deals with the separation‚ identification and determination of components in a sample. Analytical chemistry can be divided into two branches‚ qualitative and quantitative. Qualitative analysis It deals with the identity of the constituents that are in an analytical sample. Quantitative analysis It deals with the determination of how much of a given substance is in the sample. The quantitative analyses are classified
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Chemical Bonds - the interaction of sharing or transferring valence electrons‚ which result in staying close together. Covalent Bond - the sharing of a pair of valence electrons by two atoms. Molecule - two or more atoms held together by covalent bond. Single Bond - a pair of shared electrons Double bond - two pairs of valence electrons are shared. Valence - the bonding capacity of an element. Electronegativity 0 the attraction of a
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chemistry class just a tiny bit easier. Chemical Bonding Basics In bonding‚ atoms lose‚ gain‚ or share electrons in order to have the same number of electrons as the noble gas that’s nearest on the periodic table. Ionic‚ covalent‚ and metallic bonds are formed by combinations of metals and nonmetals. * Metal + nonmetal = ionic bond * Nonmetal + nonmetal = covalent bond * Metal + metal = metallic bond When two elements engage in ionic bonding‚ one or more electrons are transferred from the
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03 Predict the properties of an element based on the patterns of the periodic table. Lesson 3.04 Define ionic and covalent bonding. Ionic Bond: A chemical bond that results from electrostatic attraction between positive and negative ions. Covalent Bond: A chemical bond in which electrons are shared between two atoms. Relate knowledge of the periodic trends to chemical bonding.
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therefore you must know this! * Be able to name the five types of bonds (covalent (2 types)‚ ionic and weak chemical bonds (2 types)). What needs to happen for each of these bonds to be created? For example‚ for a covalent bond electrons must be shared equally between two elements and these elements will share unpaired valence electrons. Polar covalent unequal sharing of electrons‚ nonpolar covalent equal sharing of electrons‚ ionic transfer of electrons‚ H-bond between H and O/N/F inter- or intra-molecularly
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The ionic bonds have an attraction between opposite charged ions by one atom‚ a metal makes a contribution of an electron and becomes a optimistic ion‚ and when another‚ a nonmetal received an electron and becomes pessimistic ion. Metal donate electrons and non-metals receives electrons. For example is Na is positive and CL is negative. The covalent bonds share the electrons and they are normally nonpolar. The covalent bonding does not donate or gain electrons such as CH4. The ionic compounds
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General Studies Level 1 Semester in which course is offered: 1 No. of Credits: 4 Total Study Hours: 56 Course Description: This course introduces students to the fundamental concepts in chemistry. It explores the structure of the atom‚ bonding between atoms/particles‚ the concept of the mole‚ redox reactions‚ kinetic theory and energetics. A laboratory component will be used to aid in the understanding of these topics. Course Rationale: CHEM 101 seeks to enlighten students about the historical
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Chemistry: A Molecular Approach (Tro) Chapter 9 Chemical Bonding I: Lewis Theory 1) Which of the following represent the Lewis structure for N? A) [pic] B) [pic] C) [pic] D) [pic] E) [pic] Answer: A 2) Which of the following represent the Lewis structure for Cl? A) [pic] B) [pic] C) [pic] D) [pic] E) [pic] Answer: B 3) Which of the following represent
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Q1(a). What are the important characteristics of clays? Clay is an inorganic materials mineral which contain on fine particle‚ normally grain size is near about <1/256mm. It shows good plasticity in wet form but become brittle when it is dried. It is good insulter of electricity and thermal conductivity. Porosity is also another important characteristic of clay.[1‚ 2] (b)What is the structure of clays? Mostly‚ clays have layers structure. They form combination of tetrahedral silicates and octahedral
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