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chemical reactions

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Ashley Calvert

on 13 April 2015

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Transcript of chemical reactions

Decomposition
Synthesis
Combustion
A combustion reaction is when oxygen combines with another compound to form water and carbon dioxide. These reaction are exothemic, meaning they produce heat. An example of this kind of reaction is the burning of napthalene.
Aerobic cellular respiration
Aerobic cellular respiration is the opposite process of photosynthesis in that energy molecules are combined with oxygen we breathe to release energy needed by our cells plus carbon dioxide and water.
What is a Chemical Reaction?
Chemical Reactions
Introduction
Hello I'm doing my genius hour report on Chemical Reactions I hope you enjoy my report.
The substances initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from reactants.
Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules. Reactions involve the chemical change of atoms and molecules.
Six categories of Chemical Reactions
A chemical reaction is purely related to chemistry whether it is happening between material or human bodies. The new discovers are maintained between components in tune with their properties. A chemical reaction is a transformation in its vital properties which are necessery to maintain its existence.
A synthesis reaction is when two or more simple compounds combine to form a more complicated one. One example of a synthesis reaction is the combination of iron and sulfer to form iron sulfide.
A decomposition reaction is the opposite of a synthesis reaction -a complex molecule breaks down to make simpler ones. One example of decomposition reaction is the electrolysis of water to make oxygen and hydrogen gas.
Single Displacement
This is when one element trades places with another element in a compound. One example of a single displacement reaction is when magnesium replaces hydrogen in water to make magnesium hydroxide and hydrogen gas.
Double displacement
An element from each of two compounds switch places.
Acid-base
An acid-base reaction occurs between an acid and a base.
Photosynthesis is a reaction to make food. Plants apply a chemical reaction called Photosynthesis to convert carbon dioxide and water into food (glucose) and oxygen. Its one of the most common everyday chemical reactions & also one of the most important.
Anaerobic respiration describes a set of chemical reactions that allow cells to gain energy from complex molecules without oxygen your muscle cells perform anaerobic respiration whenever you exhaust the oxygen being delivered to them, such as during intense or prolonged exercise.
Combustion is a type of chemical reaction. Every time you strike a match, burn a candle, build a fire, or light a grill, you see the combustion reaction. Combustion combines energetic molecules with oxygen to produce carbon dioxide and water.
Rust is a common chemical reaction. Over time, iron develops a red, flaky coating called rust. This is an example of oxidation reaction. Other everyday examples include formation of verdigris on copper and tarnishing of silver.
Mixing chemicals causes chemical reactions. If you combine vinegar and baking soda for volcano or milk with baking powder in a recipe you experience a double displacement. The ingredients recombine to produce carbon dioxide gas and water. The carbon dioxide forms bubbles in the volcano and helps baked goods rise.
Batteries use electrochemical or redox reactions to convert chemical energy into electrical energy. Spontaneous redox reactions occur in galvanic cells, while non-spontaneous chemical reactions take place in electrolytic cells.
Thousands of chemical reactions take place during digestion.As soon as you put food in your mouth, an enzyme in your saliva called amylase starts to break down sugars and other carbohydrates into simpler forms your body can absorb. Hydrochloric acid in your stomach reacts with food to break it down, while enzymes cleave proteins and fats so they can be absorbed into your bloodstream through the walls of the intestines.
Acid- Base Reactions. Everyday chemical reactions. Whenever you combine an acid vinegar, lemon juice, sulfuric acid, muriatic acid with a base baking soda, soap,ammonia, acetone, you are performing an acid base reaction. These reactions neutralize the acid and base to yield salt and water.
Soaps and Detergents
Soaps and detergents clean by way of chemical reactions. Soap emulsifies grime, which means oily stains bind to the soap so they can be lifted away with water. Detergents act as surfactants lowering the surface tension of water so it can interact with oils, isolate them, and rinse them away.
Conclusion
In conclusion why are chemical reactions important in living things ? Without chemical reactions, chemical processes could not occur. Without chemical processes, life is not possible. Anything alive is alive because of the biochemical processes going on in the organism. No chemistry equals no life. All living things are without exception biochemical mechanisms or biochemical machines. All processes of the human body are made up of chemical reactions. Enzymes are what make this happen. Without these enzymes, processes such as digestion, coagulation of blood, breathing, reproduction, or even sensory perception would not be possible. Chemical reactions creates energy, material, and substances. Without it the universe as we know it would not exist.
10 everyday common reactions
Photosynthesis
Anaerobic respiration
Combustion
Rust
Mixing Chemicals
Batteries
Digestion
Acid Base
Full transcript