your observations for Part I after 20 minutes. Part II: Decomposition of hydrogen peroxide 1. Pour one third of a cup of hydrogen peroxide into a small bowl. 2. Cut up several small pieces of raw potato and place them in the hydrogen peroxide. 3. Record your observations. Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes _____________________________________ Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide
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observations for Part I after 20 minutes. Part II: Decomposition of hydrogen peroxide 1. Pour one third of a cup of hydrogen peroxide into a small bowl. 2. Cut up several small pieces of raw potato and place them in the hydrogen peroxide. 3. Record your observations. Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes __________________it still looked the same___________________ Part II: Decomposition of hydrogen peroxide Appearance of potato and
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reddishbrown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after 30 minutes: Pretty dark coloured. Quite hard to see Lincoln’s head or the Memorial. Part IV: Reaction between baking soda and vinegar Description of what happened when the baking soda and vinegar were combined Immediately
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Acid Base And Salt Acid Acids:- The word ‘Acid’ came from Latin word ‘Acidus or Acere’ which means sour. Sour taste is the most common characteristic of acid. Acid turns blue litmus paper red. There are many substances which contain acid and hence taste sour‚ such as curd‚ tamarind‚ lemon‚ etc. Types of Acids:- Acids are divided into two types on the basis of their occurrence – Natural acids and Mineral acids. Natural Acid:- Acids which are obtained from natural sources are called natural
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Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked‚ the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked‚ it helps form a
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a) What other name(s) does this chemical go by? (i.e. synonyms) Other names for sodium bicarbonate are baking soda‚ sodium hydrogen carbonate‚ and carbonic acid sodium. (b) What is the type(s) of hazard associated with this chemical? (i.e. poisonous‚ biohazardous‚ ...) According to the Globally Harmonized System (GHS) of Classification and Labeling of Chemicals‚ sodium bicarbonate has not been categorized as hazardous. (c) What should you do if this chemical splashes in your eyes or is spilled
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of the most important gases in our planet’s carbon dioxide. PROBLEM It is possible that the presence of gas off the fire? HYPOTHESIS There are different gases that can turn off the fire. MATERIAL 1. 1 Bottle of any carbonated beverage‚ unopened. 2. Matches. Baking soda (bought at the pharmacy). 3. 1 stomach effervescent antacid tablet (Sonrisal‚Alka-Seltzer‚ etc.).. 4. 1 bottle of mineral water‚ closed. INFORMATION The presence of a gas that extinguishes fire (carbon dioxide)‚ analyzing various sources of
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people bumping into the table or the wires broke. Materials: 1) Water 2) Beaker 3) Test Tube (2) 4) Spoon 5) Salt 6) Baking Soda 7) Test Tube holders (2) 8) Battery 9) Wire Results: Before adding the salt and baking soda there was no bubbles in the beaker and the water was still clear. When adding the salt and baking soda the water became foggy and bubbles began to appear. It seemed that the positive (+) wire had more bubbles then the negative (-) wire. After
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product. These techniques will be tested with the reaction between vinegar (a mixture of acetic acid and water) and a solution of baking soda (a basic compound also known as sodium bicarbonate). Vinegar is a dilute solution of water and usually about 5% acetic acid‚ a colourless‚ strong-smelling carboxylic acid composed of a methyl group attached to a carboxyl group. Baking soda is a fine white powdered salt composed of sodium ions and bicarbonate ions. These two solutions mixed together produce two separate
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The goal for this experiment is to determine which out of the four balanced chemical equations best represent the thermal decomposition of sodium bicarbonate. The guiding question will be answered with the outcome of the sodium bicarbonates thermal decomposition and it being plugged in into the four balanced chemical equations. John Dalton atomic theory explains two fundamental laws of chemistry which are the law of conservation of mass and the law of definite proportions. The atomic theory states
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