In this lab we were asked to do multiple chemical reactions and observe what was occurring before and during the reaction. We performed two synthesis reactions, combining two or more substances to create a new substance, one decomposition reaction, taking one substance and breaking it into two or more substances, two single replacement reactions, where part of one metal is switched with a metal from a compound to form a new compound and a metal, and lastly two double replacement reactions, where two metals in different substances are switched to make two new substances. For our first synthesis reaction we took a piece of a copper wire and used sandpaper to shine it. We observed the appearance of the wire and noted it. We then held the copper wire up to the hottest part of the flame on the burner for 2 minutes, we observed what happened to the wire as it was heated, and the appearance of the wire changed as it touched the flame. For our second synthesis reaction we took a ribbon of magnesium and examined it. Then we put it into the flame and it lit, it created a very, very, very bright white light. After the magnesium burned we put its ashes in the evaporating dish and examined them. Next we performed the decomposition reaction. For this reaction we used two heaping micro spatulas of copper II carbonate and place them in a clean, dry test tube and we observed it appearance. The substance was a green powder. After heating the substance for 3 minutes we noted that it had changed to a clack powder. We put a burning wood splint into the test tube and it was put out, this was because one of the products of the synthesis of the copper II carbonate was CO2, and that was what put the flame out. The next reaction we were asked to perform were two single replacement reactions. For the first one we had 5ml of Hydrochloric Acid poured into a test tube. Then we dropped a piece of zinc into the HCL and observed what was occurring.
Chemical reactions are the heart of chemistry. ... There are now many classification systems to classify the different types of reactions. ... It is now known that there are three types of chemical reactions. ... In these cases, energy is supplied, but the different types of reactions initiate the energy differently. ... Photochemists will experiment with chemical reactions. ...
Chemical reactions are the heart of chemistry. ... There are now many classification systems to classify the different types of reactions. ... It is now known that there are three types of chemical reactions. ... In these cases, energy is supplied, but the different types of reactions initiate the energy differently. ... Photochemists will experiment with chemical reactions. ...
Chemical properties are determined by the reaction of a substance with other substances. ... Two types of substances which are very important in everyday life are acids and bases. ... All in all chemical reactions happen everywhere. ... Chemical reactions happen in different kinds of ways also. ... Chemical reactions and changes are happening even when we are not looking. ...
EXP 11: Types of Chemical Reactions Background Although countless chemical reactions exist, nearly all of them can be classified into a few specific categories. In this experiment, you will learn to differentiate five general types of chemical reactions. ... Goals Observe chemical reactions of different reaction types. Classify chemical reactions according to type. ... Describe in your own words the five types of chemical reactions listed in the Background section. ...
You can think of a battery as a small power plant that converts a chemical reaction into electrical energy. ... The chemical reaction starts when you insert a battery into a device and complete the circuit. A battery produces power through a chemical reaction. Most chemical reactions produce energy in the form of heat, but by confining chemicals inside the container and controlling the resulting reaction with a separator, batteries produce electrical energy. ... The other types of batteries are secondary batteries containing reversible chemical materials allowing them to be recharged and use...
It has been found that after a certain time interval, reversible reactions attain a state of chemical equilibrium. A chemical is a substance obtained by a chemical process or used for producing a chemical effect. ... Each chemical reaction has a unique Keq for every temperature. ... Some type of change is involved in a factor that affects equilibrium. ... The factors that affect a chemical reaction at equilibrium are changes in: 1.) ...
Through the study of these very complex reactions we find that there are chemical processes that must be in balance to maintain proper health. ... These would be the involuntary chemical reactions that occur constantly within our bodies. ... - 1 - The following is five specific examples of chemical reactions and their accompanying equations, that are in occurrence within the human body: 1~ Protein digestion and HCL production: CO2+H2OoH2CO3oH+ +HCO3 HCL is a critical chemical for proper digestion in the stomach. ... We take in H2O from the environment and exhale CO2 into the ...
Catalysts accelerate chemical reactions that otherwise proceed slowly. ... The chemical reaction accelerated by catalase is written 2H2O2 > 2H2O + O2 (gas) The products of the above reaction are oxygen gas and water, two non-poisonous molecules. ... The reaction product is 6 million molecules of water and 3 million molecules of oxygen. ... Brief outline of how enzymes work An enzyme is a protein molecule that speeds up chemical reactions. ... One enzyme works on one type of substrate. ...
There are 2 main types of primary pollutants: • Oxides of nitrogen (NO and NO ) and carbon monoxide (CO) formed when fossil fuels are burnt under high temperatures. ... Ozone is being produced all the time in the atmosphere by the reaction of oxygen molecules and atoms: O + O O 1 The oxygen atom in that reaction comes from the product of another reaction taking place. ... This reaction converts NO back to NO and therefore reduces the concentration of NO so that less ozone is broken down because this reaction does not involve breaking down of ozone unlike reaction 3 w...
