Observations of Chemical Changes Page. 14 Objectives: The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. to associate chemical properties with household products Background Information: Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature‚ presence of a flame‚ and evolution of light‚ as when as firefly glows. Three physical changes that indicate a chemical change may have
Premium Chemical reaction Chemistry
There are many types of chemical reactions‚ five general ones of which I will be describing. Chemical changes are a result of chemical reactions. All chemical reactions involve a change in substances and a change in energy. Neither matter nor energy is created or destroyed in a chemical reaction‚ only changed. There are so many chemical reactions that it is helpful to classify them into 5 general types‚ which include the following: synthesis‚ combustion‚ decomposition‚ single-replacement‚ and double-replacement
Premium Chemical reaction Oxygen Hydrogen
it is recommended sex offenders involuntarily undergo chemical castration which will influence nonviolent society. This effect has the tendency of a non-threatening environment with its extended treatment on sex hormones to reduce the levels of testosterone‚ desires‚ and unwanted fantasies. Depending on the offender’s mental stability‚ they will be released from prison after this method. As members of our community‚ one should ask‚ “Is chemical castration an appropriate punishment for sex offenders
Premium Human sexual behavior Sexual intercourse Human sexuality
FUTURE OF CHEMICAL WARFARE INTRODUCTION Background 1. Chemical Warfare is a method of warfare in which toxic or incapacitating chemicals agents are used to further the goals of the combatants. The concept of Chemical Warfare is as old as warfare itself. Until the 20th century such warfare was primarily limited to starting fires‚ poisoning wells‚ distributing smallpox-infected articles‚ and using smoke to confuse the enemy. The most extensive and large-scale use of Chemical Weapons was witnessed
Premium World War II World War I
The purpose of the lab was to find out the chemical elements based on the color of the flame that elements make by their reaction. The work we completed in the lab was testing the chemical effects of the flame from the chemicals. We tested different elements and wrote down our observations. I accomplished the knowledge of testing chemicals and making responses based on our observations.Electrons are the particles found in the chemicals that may be responsible for the production of colored light.
Premium Chemistry Fundamental physics concepts Chemical compound
we can learn to observe physical properties of varying substances as well as to use chemical reactions to observe chemical observe the chemical properties of varying substances. In experiment #1‚ we were able to detect physical properties of the aluminum and copper sulfate simply by looking at the substances. We then combined the two substances to see if they would create a chemical reaction and test the chemical properties. After being combined‚ bubbles and gas were created and the color of the
Premium Chemistry Chemical reaction Hydrogen
effectiveness at mass annihilation. Two of those weapons include chemical and biological weapons. These weapons are constructed solely to kill mass populations in the quickest amount of time as possible. Their most startling aspect is the cruelty in which lives are extinguished and brutalized. However‚ these two weapons are latently different. The definition of a chemical weapon is a weapon that uses any amount of toxic properties or chemical substances and that is intended to kill as an act of war. Biological
Premium Biological warfare World War II
Chemical Warfare Final Draft Do you think it’s right to use chemical toxins to harm or kill people who are defending‚ or fighting for their lives? I don’t and that is why I am aganist chemical warfare. There are other ways which can be used to defend your country without taking away the lives of many people in such a barbaric fashion. Chemical warfare takels many innocent lives even when they haven’t done anything wrong! Chemical warfare is a way of torturing people with nerve‚ blister‚ and choking
Premium World War II World War I Nuclear weapon
Chemical and Biological Weapons are Your FriendsAs we go on our daily lives‚ terrorists are buying and developing dangerous and hazardous biological and chemical weapons to obliterate us. They do not care who they harm; their mission is to cause terror‚ to spread chaos‚ to engulf the world in anarchy. They want to know that they are making people terminally ill and sick. They will be enjoying a job well done while your skin is covered with excruciating painful blisters‚ or while you tell your loved
Free Biological warfare World War II Iraq
Observations of Chemical and Physical Changes Hands-On Labs‚ Inc. Version 42-0182-00-03 Abstract: Observations: Exercise 1: Observations of a Chemical Change Data Table 1. Chemical Reactions. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid A2 NaOCl Sodium Hypochlorite KI Potassium Iodide Observation 1: + Add 2 drops of starch Observation 2: A3 KI Potassium Iodide Pb(NO3)2 Lead Nitrate
Free Chemical reaction Hydrochloric acid Sodium bicarbonate