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2. Standard addition - Wikipedia

   en.wikipedia.org/wiki/Standard_addition

   The Standard addition method, often used in analytical chemistry, quantifies the analyte present in an unknown. This method is useful for analyzing complex samples where a matrix effect interferes with the analyte signal.

3. Chemistry - Wikipedia

   en.wikipedia.org/wiki/Chemistry

   Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

4. List of Dewey Decimal classes - Wikipedia

   en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

   540 Chemistry. 540 Chemistry and allied sciences; 541 Physical chemistry; 542 Techniques, procedures, apparatus, equipment, materials; 543 Analytical chemistry; 544 No longer used — formerly "Qualitative analysis" 545 No longer used — formerly "Quantitative analysis" 546 Inorganic chemistry; 547 Organic chemistry; 548 Crystallography; 549 ...

5. Free Online Games: Play board games, card games, casino ... - AOL

   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

6. Pap Smears May No Longer Be Part of Your Gyno Visit

   www.aol.com/pap-smears-may-no-longer-172917739.html

   The U.S. Preventive Services Task Force is looking to update its recommendations for screening for cervical cancer. The task force has introduced a recommendation that women over the age of 30 ...

7. Multiple choice - Wikipedia

   en.wikipedia.org/wiki/Multiple_choice

   Overall, multiple choice tests are the strongest predictors of overall student performance compared with other forms of evaluations, such as in-class participation, case exams, written assignments, and simulation games. [9] Prior to the widespread introduction of SBAs into medical education, the typical form of examination was true-false questions.

8. Piglet Learning to Hop Onto the Couch Will Only Work for Cheese

   www.aol.com/piglet-learning-hop-onto-couch...

   This little piggy may not have gone to market, but she did learn to hop on the sofa on December 6. At first, I wasn't sure if she'd make the jump with her tiny legs and long body, but she can jump ...

9. Menstruation - Wikipedia

   en.wikipedia.org/wiki/Menstruation

   Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...