HOW FAST ARE CHEMICAL REACTIONS? THEORY The study of reaction rates‚ how fast or how slow a reaction takes place‚ is known as chemical kinetics. The rate of chemical reactions varies greatly. Some reactions‚ such as the explosion of an atom bomb are uncontrollable. Reactions like the decay of radioactive carbon (14C) are so slow that it takes centuries to see any noticeable change. Between the two extremes are reactions that can be measured in the laboratory. There are several factors that
Premium Iodine Chemical reaction Chemical kinetics
The Aroma of Christmas Trees One familiar smell around Christmas is that of the pine tree. The smell comes from the chemical pinene. There are two compounds in a pine tree‚ Alpha-pinene and beta-pinene. The chemical compounds The pinene is part of the terpenes family‚ which are produced by plants. Terpenes can form aerosols with other chemicals that go into the clouds and cool the air‚ as well as make the skyline above mountains blue. The terpene pinene is also a reason that pine trees are so flammable
Premium Carbon dioxide Global warming Oxygen
Investigating Chemical Equilibrium Date: 30th April 2013 Due Date: 15th May 2013 Prepared For: M. Seraji Prepared by: Andrea Odunze Abstract Many reactions proceed to a state of equilibrium. A chemical reaction at equilibrium‚ where the rates of the forward reaction and reverse reaction are equal‚ looks like this: A + B AB There are three factors‚ according to Le Chatelier’s principle‚ that affect the equilibrium position and equilibrium constant. These are the concentrations of products
Premium Chemical reaction Blue Chemical equilibrium
Class X Question 1: Chapter 1 – Chemical Reactions and Equations Science Why should a magnesium ribbon be cleaned before burning in air? Answer Magnesium is very reactive metal. When stored it reacts with oxygen to form a layer magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper to remove this layer so that the underlying metal can be exposed into air. Question
Premium Chemical reaction Oxygen Chlorine
Name: Jocelyne Munguia|Date: 6/12/13| Exp 1: Observations of Chemical Changes|Lab Section: 75426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|A2|Tiny bubbles formed around the edges. Under white paper it looked transparent‚ but under black paper there was some white in the middle. | B.|HCl + BTB|A3|The mixture turned yellow instantly. Under white paper the mixture was more of mustard yellow and under black paper it was less of a bright yellow. | C
Premium Green Color Yellow
Observation of Chemical Changes Purpose In this experiment‚ the student studied the composition of materials in a setting where the indications of chemical changes were safely observed. The changes observed consisted of bubble formation‚ colors‚ viscosity‚ and precipitate formation. Procedure Using a well plate: use a different well for each chemical combination. Two drops (unless otherwise noted) of each chemical in the combinations (below) should be placed in one well. A dark and light
Premium PH indicator PH Acid
On the other hand‚ imagine how taken aback people are to find themselves dependent on chemical substances when there were no apparent clues suggesting they might be susceptible to active addiction. This sometimes happens when a person is prescribed pain pills after surgery or for pain management or a person decides to experiment with heroin‚ and the obsessions/compulsions of addiction raise their monstrous heads without warning. There is no pre-emptive strategy for this. So‚ sometimes people
Premium Drug addiction Addiction Heroin
1. Everything is made of chemicals. You are made of chemicals. So is your dog. So is your desk. So is the sun. Drugs are chemicals. Food is made from chemicals. 2. Many of the changes you observe in the world around you are caused by chemical reactions. Examples include changing colors of leaves‚ cooking food and getting clean. 3. Knowing some chemistry can help you make day to day decisions that affect your life. Can I mix these household chemicals? What are safe mosquito repellents? Will
Free Chemistry Chemical substance Chemical element
Mole Ratio of a Chemical Reaction: Copper & Silver Nitrate Lab #4 OBJECTIVE In this experiment‚ you will determine the number of moles of reactants and products present in the reaction of copper and silver nitrate‚ and calculate their mole-to-mole ratio. The mole-to-mole ratio relating to the disappearance of copper and the formation of silver metal will be used to write the balanced equation for the reaction. The reaction of copper metal with silver nitrate solution is a single
Premium Chemical reaction Chemistry Mole
Introduction The purpose of this lab is to be able to observe the reaction rates of different chemical substances‚ by looking at which substance is the fastest reactant. This is what chemical kinetics is. Reaction rate is the change in the concentration of a reactant or product in a chemical reaction per unit time. In this lab the requirement was to be able to calculate each Average reaction rate which is the change in reactant or product concentration at a given time interval. Some equations that
Premium Chemical reaction Reaction rate Sulfuric acid