CHEMISTRY IN OUR DAILY LIVES Chemistry In Everyday Life Chemistry in everyday life : Our entire universe is made up of matter which is constantly changing forms and evolving into other forms of energy. Chemistry is defined as the study or science of this ever changing matter. The other sciences which we study commonly like biology, physics and mathematics are all dependent on chemistry and […]

O Level Chemistry (5070) Frequently Asked Questions Can my candidates take a dictionary / calculator into the examination? Calculators can be used in all science papers and students should take a calculator, ruler, pencil, protractor and set of compasses into all science exams. Dictionaries are not allowed. My candidates did 0K last session but I would like advice on how to improve my teaching and […]

Chem 105 Practice Test 1 Note: There will not be this many questions on your test, I just wanted to give you as much practice as possible. Also, none of these exact questions will be on the test, just similar questions. Also, make sure you can do the homework, as I may have some questions similar to the homework questions. 1. Molecules can be described […]

INSTRUCTIONS 1. All entries in the Admission Form must be made in BLOCK LETTERS by the candidate in his/her own handwriting. 2. Incomplete application form will not be accepted. 3. Any candidate who passed intermediate examination from Lahore, Sargodha, Faisalabad, Rawalpindi, Gujranwala and Federal Board can apply for registration without N. O. C (No Objection Certificate). 4. The candidate who want him self to be […]

THE CHEMISTRY OF ORGANIC MOLECULES I. MACROMOLECULES-large molecules that are composed of smaller molecules and atoms that are bonded together. These are among the largest of all chemical molecules. A. Polymers-the largest of the macromolecules. These are composed of numerous, small identical subunits known as Monomers. There are 4 major polymers that are important for living organisms. These polymers are; carbohydrates, lipids, proteins and nucleic […]

Table 1: Data Collection Table – Contains all of the primary data directly obtained from the lab. Indicator | Initial volume of NaOH in burette (ml) ±0. 05| Final Volume of NaOH in burette (ml) ±0. 05| Final – initial Burette Reading (Volume of NaOH used) (ml) ±0. 1| Qualitative Observations | Phenolphthalein | 0. 00 | 0. 90| 0. 9| At first when the […]

The purpose of this lab was to see which solutions are soluble and which are not. We were able to see this by mixing certain solutions together and observing changes that occurred. The procedure for this experiment included a few different steps. The first steps were to add the nitrate solutions into the lettered parts of the 96-well plate. Once you were done with that, […]

Geochemistry, Pollution Analysis and Management of Groundwater in Karaj field, Iran Introduction: All living things depend perfectly on a supply of fresh H2O and in term of human necessities ; H2O is considered most of import following merely to air. Water is used for many intents Viz. , domestic, agribusiness, industry and other multi assorted demands. However, many people around the universe are inveterate short […]

Objectives of the Project Report The main objective of this chemistry project report is “To Study the digestion of starch by salivary amylase and effect of temperature and pH on it” and To study digestion of starch by saliva. To study the effect of temperature on the digestion of starch by saliva. To study the effect of pH on the salivary digestion of starch. Introduction […]

The process of naming compounds allows chemists to communicate formulae in words rather than in chemical symbols. There are, however, a few rules about naming compounds which need to be known in order to write a formula in word form or translate a compound in word form into chemical symbols. Ionic compounds If the compound is ionic, then the name of the cation (usually metal) […]