SAMPLE QUESTION PAPER CHEMISTRY (043) CLASS XII (2013-14)
... 5. Correct double helix structure of DNA 6. Which depends on the pore structure and the shape of reactants and products ...
... 5. Correct double helix structure of DNA 6. Which depends on the pore structure and the shape of reactants and products ...
Chemical Equations and Reactions
... greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a particular element can replace in a single replacement r ...
... greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a particular element can replace in a single replacement r ...
Double-Replacement Reactions - Fort Thomas Independent Schools
... • The formation of a precipitate occurs when the cations of one reactant combine with the anions of another reactant to form an insoluble or slightly soluble compound. • example: 2KI(aq) + Pb(NO3)2(aq) ...
... • The formation of a precipitate occurs when the cations of one reactant combine with the anions of another reactant to form an insoluble or slightly soluble compound. • example: 2KI(aq) + Pb(NO3)2(aq) ...
SEPARATION OF MATTER - Los Angeles City College
... is boiled in a beaker until dryness. White crystals remain in the beaker. ...
... is boiled in a beaker until dryness. White crystals remain in the beaker. ...
Analysis of a Matter
... is boiled in a beaker until dryness. White crystals remain in the beaker. ...
... is boiled in a beaker until dryness. White crystals remain in the beaker. ...
(2013), Volume 1, Issue 2, 84-87 - International Journal of Advanced
... Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It should not be confused with green chemistry, which seeks to reduce potential pollution at its source. It can be defined as the study of the sources, reactions, transport, effect ...
... Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It should not be confused with green chemistry, which seeks to reduce potential pollution at its source. It can be defined as the study of the sources, reactions, transport, effect ...
Boron Group Compounds Oxidation States Boron
... energies of the 2nd and 3rd electrons in period 4 and heavier pblock elements being higher than expected). ...
... energies of the 2nd and 3rd electrons in period 4 and heavier pblock elements being higher than expected). ...
Unit Two Objectives
... Unit 3: Periodic Table 1. The Periodic Table: What is the Periodic Law? The Periodic Law states that when the elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties. a. The horizontal rows are called the periods. There are ...
... Unit 3: Periodic Table 1. The Periodic Table: What is the Periodic Law? The Periodic Law states that when the elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties. a. The horizontal rows are called the periods. There are ...
Basics of Chemistry
... Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an element ...
... Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an element ...
Unit 1 – Physical Science and Chemical Reactions
... eg. SnCl4: tin (lV) chloride eg. nickel (ll) oxide: NiO eg. platinum (lV) sulfide: PtS2 NOTE: Know Roman numerals I – X ...
... eg. SnCl4: tin (lV) chloride eg. nickel (ll) oxide: NiO eg. platinum (lV) sulfide: PtS2 NOTE: Know Roman numerals I – X ...
Chapter 2 - Molecules of Life (Biochemistry) Periodic Table of
... Atoms can gain or lose electrons! Except for the first electron shell, the outermost (valence) shell can hold 8 electrons (This applies to all atoms that you need to know about.)! E.g. Sodium atom (Na1123) loses one electron → Na+! • Giving something away is a “positive” thing to do! • Positively ...
... Atoms can gain or lose electrons! Except for the first electron shell, the outermost (valence) shell can hold 8 electrons (This applies to all atoms that you need to know about.)! E.g. Sodium atom (Na1123) loses one electron → Na+! • Giving something away is a “positive” thing to do! • Positively ...
Organic and Bio-Molecular Chemistry
... study of these compounds, defined Natural Compounds, as far as structure, properties and biological role is concerned, is the subject matter of Organic and Bio-Molecular Chemistry. Chemists have been able to synthesize a great variety of new compounds with a skeleton mainly based on carbon atoms; th ...
... study of these compounds, defined Natural Compounds, as far as structure, properties and biological role is concerned, is the subject matter of Organic and Bio-Molecular Chemistry. Chemists have been able to synthesize a great variety of new compounds with a skeleton mainly based on carbon atoms; th ...
Lecture 5 (2.1-2.3)
... • Law of constant composition (Proust) – a pure compound always contains definite proportions (fractions) of its elements by mass Mass of element Mass of compound ...
... • Law of constant composition (Proust) – a pure compound always contains definite proportions (fractions) of its elements by mass Mass of element Mass of compound ...
Chemistry Syllabus
... 1) Write all calculations in this section. One sample calculation is needed where the same calculation is repeated. Make sure the equation is written, numbers are plugged into the equation with units and final answer represented with units and proper significant figures. All graphs must have a tit ...
... 1) Write all calculations in this section. One sample calculation is needed where the same calculation is repeated. Make sure the equation is written, numbers are plugged into the equation with units and final answer represented with units and proper significant figures. All graphs must have a tit ...
chapt 1 - Cantt Academy, Tahli Mohri Chowk, Rawalpindi
... Pseudo – Science or Alchemy:In the beginning of chemistry during 600 – 1600 AD some scientist tried to convert cheap metals in to gold. They performed many experiment but could not succeed and wasted their time and money. These scientists are called alchemists and this branch of chemistry is called ...
... Pseudo – Science or Alchemy:In the beginning of chemistry during 600 – 1600 AD some scientist tried to convert cheap metals in to gold. They performed many experiment but could not succeed and wasted their time and money. These scientists are called alchemists and this branch of chemistry is called ...
semester i - Pt. Ravishankar Shukla University
... definitions of group, subgroup, relation between orders of a finite group and its subgroup.Conjugacy relation and classes. Point symmetry group. Schonflies symbols, representations of groups by matrices (representation for the Cn, Cnv, Cnh, Dnh etc. groups to be worked out explicitly). Character of ...
... definitions of group, subgroup, relation between orders of a finite group and its subgroup.Conjugacy relation and classes. Point symmetry group. Schonflies symbols, representations of groups by matrices (representation for the Cn, Cnv, Cnh, Dnh etc. groups to be worked out explicitly). Character of ...
Chapter 11 Chemical Reactions
... (aq) after the formula = dissolved in water, an aqueous solution: NaCl(aq) is a salt water solution used after a product indicates a gas has been produced: H2↑ used after a product indicates a solid has been produced: PbI2↓ ...
... (aq) after the formula = dissolved in water, an aqueous solution: NaCl(aq) is a salt water solution used after a product indicates a gas has been produced: H2↑ used after a product indicates a solid has been produced: PbI2↓ ...
Chemistry EOC Review
... 131. What is the formula for molarity? (Formula provided on EOC). 132. Calculate the molarity of a solution that contains 85 g BaCl2 in 500 mL of water. 133. What is entropy? 134. What does it mean when entropy has a negative value? 135. Indicate if the following will have a positive or negative val ...
... 131. What is the formula for molarity? (Formula provided on EOC). 132. Calculate the molarity of a solution that contains 85 g BaCl2 in 500 mL of water. 133. What is entropy? 134. What does it mean when entropy has a negative value? 135. Indicate if the following will have a positive or negative val ...
ch14
... The large number and wide variety of organic compounds is due to the ability of C to bond to itself, and to form multiple bonds. Catenation is the process whereby carbon bonds to itself to form stable chains, branches, and rings. Since C is small, the C-C bond is short enough to allow effective side ...
... The large number and wide variety of organic compounds is due to the ability of C to bond to itself, and to form multiple bonds. Catenation is the process whereby carbon bonds to itself to form stable chains, branches, and rings. Since C is small, the C-C bond is short enough to allow effective side ...
Average Atomic Mass
... Convert the following numbers from scientific notation to ordinary notation. 9. 3.02 x 10-3 g A/F. .302 x 10-3 g B/G. 3.02 g C/H. 0.00302 g D/J. 3020 g ...
... Convert the following numbers from scientific notation to ordinary notation. 9. 3.02 x 10-3 g A/F. .302 x 10-3 g B/G. 3.02 g C/H. 0.00302 g D/J. 3020 g ...
ATOMS, MOLECULES and IONS
... Chemical properties of elements depend on the atomic number of the element. A complete Periodic Table lists the elements, their symbols and atomic numbers as well as atomic masses. The Periodic Table is arranged into rows, called periods and columns, which are called groups. The first period consist ...
... Chemical properties of elements depend on the atomic number of the element. A complete Periodic Table lists the elements, their symbols and atomic numbers as well as atomic masses. The Periodic Table is arranged into rows, called periods and columns, which are called groups. The first period consist ...
Inorganic chemistry
Inorganic chemistry deals with the synthesis and behavior of inorganic and organometallic compounds. This field covers all chemical compounds except the myriad organic compounds (carbon based compounds, usually containing C-H bonds), which are the subjects of organic chemistry. The distinction between the two disciplines is far from absolute, and there is much overlap, most importantly in the sub-discipline of organometallic chemistry. It has applications in every aspect of the chemical industry–including catalysis, materials science, pigments, surfactants, coatings, medicine, fuel, and agriculture.