EXPERIMENT # 14: Exothermic and endothermic reactions Date: 25/06/2012 Name: Meagen Reyes Year 11 PARTS A‚ B and C * For the procedures and equipment needed in these experiments‚ refer to page 73-74 in the STAWA Exploring chemistry stage 2 book Part A: solution process (dissociation) Solutions and their chemical equations | Initial temperature (in Celsius) | Final temperature (in Celsius) | Classification(exothermic or endothermic) | Sodium hydroxide NaOH(s) Na+(aq) + OH-(aq) + Energy
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Name of Experiment: Chili Pepper isn’t Just Hot. It’s a Medicine. CHAPTER I INTRODUCTION Chilli pepper species are reported to contain many different compounds‚ including capsaicinoids (e.g.capsaicin)‚ carotenoids and flavonoids. Some studies show that Capsicum and capsaicin may have anti-oxidant and anti-bacterial effects. Red chili pepper is hot. That’s what we all knew. But there are people who can eat it just like candy‚ saying that it is tasty‚ sweet‚ and medicinal. We can definitely
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fashion and made a chart in my lab notebook to facilitate my observation documentation. In the 96-well plate‚ I placed two drops of cobalt II nitrate into seven wells in one row‚ copper II nitrate into another row‚ iron III nitrate into a third row‚ barium nitrate into a fourth row‚ and nickel II nitrate into a fifth row. Then I added 2 drops of sodium phosphate into each of the wells containing the chemicals and documented to reactions. I repeated this procedure of adding 2 drops into each row of
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Magnesium powder Spatula Universal Indicator Thermal mat Filter paper Safety: Wear eye protection. Magnesium and calcium are highly flammable. Calcium hydroxide is an irritant. Group 2 elements Calcium Strontium Magnesium Beryllium Barium Radium Introduction: The Group 2 elements are all metals with a shiny‚ silvery-white colour having 2 electrons in their outermost shell. The alkaline earth metals are high in the reactivity series of metals‚ but not as high as the alkali
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EXPERIMENT 1 IDENTIFICATION OF UNKNOWN COMPOUNDS Date of experiment : 7th August 2012 Venue: ME204 INTRODUCTION Chemical reactions are regularly categorized into 3 types: oxidation-reduction (redox reaction)‚ precipitation (double displacement) and acid-base reaction (double displacement) Type 1: Oxidation-Reduction Reactions Oxidation-reduction processes include the movements of electrons form oxidants to reductants‚ which lead to increases in oxidation
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P3– a. gain of 1 electron b. loss of 1 electron c. gain of 3 electrons d. loss of 2 electrons e. loss of 2 electrons f. loss of 1 electron g. gain of 1 electron h. loss of 2 electrons a. bromide anion b. sodium cation c. arsenide anion d. barium cation e. calcium cation f. copper(I) cation g. hydride anion h. copper(II) cation S OBLE M ASSESSMENT 27. an electron in the highest occupied energy level 28. a. Group 5A; 5 valence electrons E LESSON 7.1 PR Answers
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After selecting a patient and gaining a background on disease he would begin a treatment plan for the patient. He would do this with the tools available to him some of these include barley (broth‚ gruel‚ and barley cakes)‚ wine‚ hydromel‚ honey‚ enemas‚ and fomentations to name a few. For example‚ let us say the physician took a case‚ of a boy who was 10 years of age and appeared pale and thin. The mother explains her son has a lower abdominal pain‚ has been constipated for more than 3 days‚ is
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world came to know that Shirley Ardell Mason was true Sybil from the book and movie. Sybil’s mother was an abusive schizophrenic. As a child Sybil was abused physically and verbally. Her mother would rape her everyday with a buttonhook‚ give her icy enemas‚ tie her and gag her‚ and even break a couple bones. Sybil’s mom was abusive because she had Paranoid Schizophrenia Sybil on numerous occasions would have to watch her parents have sex. Whenever Sybil’s mother miscarried‚ her father buried the fetus
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Unit 30 – Health Psychology Models of health related behaviour and contemporary issues in health psychology. In this assignment I will concentrate on two theories of behaviour; health belief model (HBM) and the Theory of Reasoned Action. I will also look at factors that affect our approach to health and illness; poverty and age. Finally I will look at two different specific health issues; addiction and eating disorders‚ I will also look at the similarities and the differences between eating
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3. Observations (12 pts); The color of the flame is expected to be as follows: Metallic ion Flame Color Sodium Na+ Orange Strontium Sr2+ Pinkish-red Potassium K+ Bluish-purple Lead Pb2+ NOT IN LABPAQ Barium Ba2+ Yellow Copper Cu2+ Green Lithium Li+ Pink Calcium Ca2+ Orangish-pink Unknown Pinkish-red STRONTIUM Note: Attach your picture showing the soaked cotton swab back and forth through the flame of the heat source (procedure #4)
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