any specific mineral. Well‚ “because the atomic structure of a mineral species is always the same‚ most of its physical properties are relatively constant and may be used for the mineral’s identification” (Gardiner and Wilcox 107). There are many intriguing physical properties to mineral identification. Visible properties include color‚ luster‚ streak‚ crystal form‚ cleavage. The tactile property can be measured using Mohs scale‚ which measures hardness of minerals compared to common objects
Premium Mineral
number of periods in the long form of the periodic table is (a) 6 (b) 7 (c) 10 (d) 18 Which of the following elements has maximum metallic character? (a) Li (b) N (c) Na (d) P Which of the following is the most reactive halogen? (a) F (b) Cl (c) Br (d) I Why do elements in a group show same valency? Why are the members of group 1 known as alkali metals? How does metallic character of the elements vary (i) In a group (ii) In a period? Name the other elements which belong to the same family as (i) Calcium
Free Periodic table
Reactivity of Halide Ions Michelle Faktor and Kelly Freas Date of Experiment: October 28‚ 2012 Period 2 Honors Chem Purpose: The purpose of this lab is to observe the reactions of halide ions with different reagents by mixing them together. Analyze data to determine characteristic reactions of each halide ion. Infer the identity of unknown solutions. Materials: * 0.1 M AgNo3 * 0.1 M NaCl * 0.1 M NaF * 0.2 M KBr * 0.2M Kl * 0.2 M Na2S2)3 * 0.5 M Ca(NO3)2
Premium Chemistry Chemical reaction Hydrogen
Manual Testing Faq’s What is software testing? Software testing is the process used to help identify the correctness‚ completeness‚ security‚ and quality of developed computer software. Testing involves operation of a system or application under controlled conditions and evaluating the results. Controlled conditions should include both normal and abnormal Why Management some times not serious about testing? Solving problems is a high-visibility process; preventing problems is low-visibility
Premium Software testing Computer program Software engineering
Lab 2: Infra-Red (IR) - Nuclear Magnetic Resonance (NMR) Exercises In Molecular Spectroscopy - Structural Determination Organic Chemistry II CHEM 2425 Manrique October 30‚ 2012 Alex Wolf Introduction For the purposes of this lab‚ the chemical formula will be given‚ and the degrees of unsaturation can be calculate from the formula (2C+2)-(H+Hal-N)/2. The degrees of unsaturation will give clues as to the structure. A double bond‚ as well as a ring will have one degree of unsaturation each
Premium Chemistry Organic chemistry Oxygen
Christy Chan (5) BIOLOGY LAB REPORT Investigation of the effect of metal ions on enzyme activity Objective To study the effect of two heavy metal ions‚ lead (II) ions and silver ions on the enzyme activity of invertase. Introduction Hypothesis: The rate of enzyme reaction of invertase decreases and the reaction eventually stops as the heavy metal ions inhibit the enzyme reactions. Biological principle: Heavy metal ions are non-competitive inhibitors. They do not compete with the substrates
Premium Enzyme Silver
concentration of ions of a sparingly soluble salt in water OTHER than at equilibrium is called the IONIC PRODUCT Example 1. AgCl [pic] Ag+ + Cl- Ksp = [Ag+][Cl-] Example 2 Cu(OH)2 [pic] Cu2+ + 2OH- Ksp = [Cu2+][OH-]2 Checkpoint A Write the Ksp expressions for the sparingly soluble salts below a. AgF b. HgCl2 c. Cu(OH)2 Common ion effect The solubility of one salt is reduced by the presence of another salt having a common ion. For example
Premium Solubility Sodium chloride Ammonia
Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Abdud Dayan Adeeb Of Class XII C St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Jagadeesh
Premium Management High school Education
D-block ions and the kinetics of reactions iodine clock reaction: By Stephen Parsons 6K2 Centre number: 61813 Candidate number: 8270 Table of Contents My aim and my reaction: 3 Rate of reaction: 4 Activation enthalpy: 5 Collision theory: 6 The effect of temperature on reaction rate: 7 The effect of concentration on reaction rate: 7 The effect of a catalyst on reaction rate: 8 D-block elements: 9 The effect of extra kinetic energy (from stirring etc.): 10 Where do we use D-block ion catalysts
Premium Chemical kinetics Chemical reaction
the urine and neutralizes the acid compounds of the body such as phosphates‚ urea and ammonia. It is‚ therefore‚ highly beneficial in the treatment of acidosis and other diseases associated with too much acid in the system. The presence of oxalate ions and oxalic acid content in tomatoes is also a cause of kidney stones. Several researches have proven that the
Premium Tomato Fruit Sodium hydroxide