produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula a.c2h5oh b.hcooh c.h3cooch3 d.c6h14 3.a compound p has the following characteristics: -reacts with sodium carbonate to release a gas that clouds lime water -reacts with compound q to form a fragrant liquid a.p-sulphuric acid q-ethyl ethanoate b.p-ethanoic acid q-ethyl ethanoate c. p-ethanoic acid q-ethanol d. p-ethanol q- ethanoic acid 4.element-proton
Premium Oxygen Chlorine Hydrogen
insecticide and solvent | alcohol‚ wood | methyl alcohol - used as an antifreeze‚ solvent‚ fuel‚ and as adenaturant for ethanol | alum | aluminum potassium sulfate | alumina | aluminum oxide - As a filler‚ abrasive‚ effect pigment | antichlor | sodium thiosulfate - used for the neutralization of chlorine and/or Iodine solutions at your hatchery or aquaculture facility | antifreeze | ethylene glycol - used in applications ranging from consumer packaging‚ beverage containers‚ aircraft deicing
Premium Chlorine Copper
re-ignite (c) hydrogen causes burning splint to produce a pop sound. 2. Sketch a periodic table and label the main regions of the table. See pg 184 3. Draw Bohr diagrams for the following atoms: (a) boron (b) sulphur (c) calcium. [pic] 4. How many protons‚ neutrons‚ and electrons‚ do the following particles have: (a) C‚ (b) Fe‚ (c) Cl-1‚ (d) Ca+2‚ (e) N-3? [pic] 5. Use Bohr diagrams or Lewis dot diagrams to show how an ionic bond forms between sodium and chlorine
Premium Stem cell Cell Cell division
CBSE Continuous and Comprehensive Evaluation (CCE) Sample Question Papers Solutions Term 1 (April to September 2013) Science Class OSWAAL BOOKS CONTENTS l Solutions q Sample Question Paper 6 q Sample Question Paper 7 q Sample Question Paper 8 q Sample Question Paper 9 q Sample Question Paper 10 1 - 7 8 - 13 14 - 20 21 - 26 27 - 32 ll SAMPLE QUESTION PAPER–6 Section-A 1. Moving charges / electric current / magnet (any two). 2. (i) To develop male secondary sex organs
Premium Magnetic field Chemical reaction Sodium chloride
chemical reactions? Products are the finished product of a chemical equation‚ and reactants are what make up the products. ( atoms‚ matter‚ molecules‚ energy‚ rate‚ temperature) Name some compounds: H2O (Hydrogen and Oxygen elements - Water) CH4 (Carbon and Hydrogen elements - Methane) NaCl (Sodium Chloride- salt) Different types of compounds: Metal + Metal = Metallic Compound Metal + Non-Metal = Ionic compound Non-Metal + Non-Metal = Covalent compound Different types of reactions: Metal+ non-metal
Premium Oxygen Carbon dioxide Hydrogen
mass percent of copper in the mineral bornite‚ Cu4FeS4? a) 44.4% b) 58.0% c) 14.5% d) 72.4% 8. A 0.2420 sample of an unknown containing C‚ O‚ and H is burned completely. Analysis shows that 0.2265 grams of water are produced. How many grams of hydrogen were present in the 0.2420 grams of sample? a) 0.0253 grams b) 0.2265 grams c) 0.0127 grams d) 0.1522 grams 9. What is the mass of 0.220 moles of AgNO3? a) 169.9 g b) 0.415 g c) 0.220 g d) 37.4 g Short Answers Q1. Silver consists
Premium Oxygen Atom Molecule
Name *Density @ STP Melting Point (°C) Boiling Point (°C) Chlorine Hydrogen Hydrogen chloride Hydrogen sulfide Nitrogen Nitrogen monoxide 3.21 g/L 0.0899 g/L 1.640 g/L 1.54 g/L 1.25 g/L 1.34 g/L 1.43 g/L 2.532 g/cm 3 2.165 g/cm 3 2.92 g/L 1.00 g/cm 3 −101 −35 −259 −115 −85 −253 −85 −61 −210 −164 −218 851 801 −73 −196 −152 −183 Decomposes 1413 −10 100 Oxygen Sodium carbonate Sodium chloride Sulfur dioxide *Water (at 4°C) 0 NCDPI Reference Tables for Chemistry
Free Hydrogen Oxygen Chlorine
module: NOTE: In chemistry‚ [x] means “concentration of x” in moles per litre (mol/L). EG: [H3O+] means “concentration of H3O+ ions” in mol/L. BASIC reactions to remember: Acid reactions: acid + base salt + water acid + metal salt + hydrogen gas acid + carbonate carbon dioxide gas + salt + water Formation of hydronium: H+ + H2O H3O+ Reactions of various oxides with water: Non-metal (acidic) oxides: CO2 (g) + H2O (l) H2CO3 (aq) (carbonic acid) SO2 (g) + H2O (l) H2SO3 (aq) (sulfurous
Premium Acid PH
Subject Content Most of the objectives specified in this section relate to Knowledge with Understanding‚ although some indication has been given as to where the skills of Handling Information and Solving Problems may be developed. Teachers are reminded that‚ in the written papers‚ 40% of the marks are allocated to these higher ’thinking’ skills. In almost every section‚ students should therefore be given practice at dealing with unfamiliar situations so that these higher thinking skills can be developed
Premium Oxygen Ionic bond Sodium chloride
dsUnzh; fo|ky; laxBu नई दिल्ली अध्ययन / सहायता सामग्री िसवीीं कक्षा ववज्ञान क ललए े dsUnzh; fo|ky; laxBu lEHkkxh; dk;kZy;] vkbZ- vkbZ- Vh- dSEil] iobZ] eqEcbZ& 400076 1 Acknowledgements CHIEF PATRON : SHRI AVINASH DIKSHIT COMMISSIONER‚ Kendriya Vidyalaya Sangathan(HQ) New Delhi SHRI PRL GUPTA‚ ASSISTANT COMMISSIONER‚ Kendriya Vidyalaya Sangathan Mumbai Region SHRI SK VERMA EDUCATION OFFICER‚ Kendriya Vidyalaya Sangathan Mumbai Region SMT. AP BHALLA EDUCATION OFFICER‚ Kendriya Vidyalaya
Premium Chemical reaction Carbon dioxide Hydrogen