2What Part of the Atom Is Affected by Chemical Reaction? Electrons are the negatively charged. This particle is about 1,000 times smaller than the mass of a proton. It is impossible to see where they are at a specific moment due to the speed it moves at. Their chemical bond is Electrovalent, or Ionic. They are the only part in the atom affected by chemical reaction.lectron.html
3What is happening during a chemical Rx? During a chemical reaction bonds between atoms or molecules are either being broken or formed. For example vinegar and baking soda creates this chemical reaction The acid in the weak 5% substance (vinegar) reacts with the pure substance (baking soda)Laws of Conservation – Matter can not becreated or destroyed. That total mass of products before and after reaction is the same.Signs of Chemical Reaction – bubbling, fizzing, temperature change, color change, catches on fire, etc.Reactants – are the materials that is used for the chemical reactionProducts – is the substance(s) made afterwards123/change/reactant.htm
4Explain the role of energy in chemical reactions. Chemical potential energy is energy that is stored in the bonds of molecules or atom. This energy holds these particles together.Examples: Biomass, Petroleum, Natural gas, and Propane. Activation energy is the energy that is needed to create a chemical reactionExothermic – reaction gets hot Endothermic- reactions get coldEXOTHERMIC EXAMPLEGasoline http://home.comcast.net/~manjo1111/BUBF/GasCan.jpg+Fire http://upload.wikimedia.org/wikipedia/commons/1/16/Australia_Cairns_Flame.jpg=EXPLOSION
5ENDOTHERMIC EXAMPLE Baking soda + Firecommons/thumb/c/c1/Streichholz.jpg/250px-Streichholz.jpg=EXTINGUISHED out.jpg
6Types of Chemical Rx’sExplain what happens in the different types of reactionsSynthesis – is the combination of 2 0r more pre-existing elements. Creating something new.Decomposition – is when a chemical compound is separated into a smaller compound or element Combustion – or burning is a exothermic reaction produces heat. Can be a flame or just a glowSingle Replacement – takes one element with a chemical which results to another element being created. For example putting aluminum in copper chloride creates copper Double Replacement - when a positive ion or Cation combines with a negative ion or anion. For example barium chloride and sodium sulfate creates a white powder.