|WEEK |LEARNING OBJECTIVES |LEARNING OUTCOMES |ACTIVITIES |REMARKS | |1 |FORM 4 ORIENTATION | | |4/1 – 6/1 |
Free Atom Periodic table Chemical element
oap and detergent‚ soap [Credit: © Photos.com/Thinkstock]substances that‚ when dissolved in water‚ possess the ability to remove dirt from surfaces such as the human skin‚ textiles‚ and other solids. The seemingly simple process of cleaning a soiled surface is‚ in fact‚ complex and consists of the following physical-chemical steps: Wetting of the surface and‚ in the case of textiles‚ penetration of the fibre structure by wash liquor containing the detergent. Detergents (and other surface-active
Premium Fatty acid Soap Fat
The knowledge of chemical analysis today has become important not only for scientists in their research but in fact bears influence in our daily routine as well. To recognize and classify these uses‚ we have to first understand‚ what is chemical analysis?Chemical AnalysisChemical Analysis is a body of procedures and techniques used to identify and quantify the chemical composition of a sample of substance.1 It may be said as a collection of all the techniques required to obtain any chemical information
Free Chromatography Chemistry Analytical chemistry
SALTS AND THEIR PREPARATION SALTS A salt is a compound formed when the hydrogen ions in an acid are replaced by metal ions or by ammonium ions. Compounds in which the H+ ions in an acid have been replaced by ammonium ions (NH4+) are called ammonium salts. NOTE: •An anion is a negatively charged ion. Hence:•Hydrochloric acid gives chlorides. E.g. sodium chloride‚ ammonium chloride. •Nitric acid gives nitrates. E.g. barium nitrate‚ copper nitrate. •Sulphuric acid gives sulphates. E.g. silver sulphate
Premium Ammonia Sodium Ion
periodic table to predict the behavior of elements Procedure: 1. Number the groups. 2. Number the periods 3. Draw a heavy black line between the metals and nonmetals. 4. Write the name of each of the following groups above the number: Group 1 alkali metals Group 2 alkaline earth metal Group 3-12 (collectively) transition metals Group 16 chalcogens Group 17 halogens Group 18 Noble gases 5. Write the names of the two rows at the bottom of the chart: lanthanides
Free Atom Chemical element Periodic table
IGCSE Complete Chemistry Notes Unit 1: States of matter Everything is made of particles. Particles in solid are not free to move around. Liquids and gases can. As particles move they collide with each other and bounce off in all directions. This is called random motion. In 2 substances‚ when mixed‚ particles bounce off in all directions when they collide. This mixing process is called diffusion. It’s also the movement of particles without a force. The smallest particle
Premium Oxygen Atom Hydrogen
Obtain a copy of the blank periodic table. Develop a color code for each of the families listed below (atomic number of members is provided). Color in the family on the periodic table and the title of the box for that family. Hydrogen Family – 1 Alkali metals – 3‚ 11‚ 19‚ 37‚ 55‚ 87 Alkaline earth metals – 4‚ 12‚ 20‚ 38‚ 56‚ 88 Transition metals – d block and 13‚ 31‚ 32‚ 49‚ 50‚ 51‚ 81‚ 82‚ 83‚ 84 Rare earth metals – f block Boron Family – 5 Carbon Family – 6‚ 14 Nitrogen Family – 7‚ 15‚ 33
Premium Periodic table
The transition metals are placed in the centre of the periodic table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties
Premium Chemical element Periodic table Transition metal
soda‚[2][3] or lye‚ is an inorganic compound with the chemical formula NaOH (also written as NaHO). It is a white solid‚ and is a highly caustic metallic base and alkali salt. It is available in pellets‚ flakes‚ granules‚ and as a 50% saturated solution.[citation needed] Sodium hydroxide is soluble in water‚ ethanol and methanol. This alkali is deliquescent and readily absorbs moisture and carbon dioxide in air. Sodium hydroxide is used in many industries‚ mostly as a strong chemical base in the manufacture
Premium Sodium hydroxide
chemical compounds used by chemists. For instance‚ hydrochloric‚ phosphoric and citric are acids used to make mineral stain removers‚ toilet bowl cleaners‚ metal cleaners and rust removers. A variety of maintenance chemicals contain these compounds. Alkali maintenance chemicals like degreasers‚ oven cleaners and drain openers contain bases such as Sodium Hydroxide (NaOH)‚ Potassium Hydroxide (KOH)‚ Sodium Metasilicate (Na2SiO3)‚ Ammonium Hydroxide (NH3(aq)). Special salts like Sodium Lauryl Sulfate
Free PH Sodium hydroxide Base