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Chemistry

Unit 5 Concept 1: Writing Reactions

QuestionAnswer
Differentiate between physical chemical changes Physical change: a change that doesn't change the identity of the elements involved. Chemical change: a change that DOES change the identity of the elements invloved
Explain the collision theory reacting particles nust collide in order for a chemical reaction to occur
list several signs that can provide evidence that a chemical reaction light, temp change, odor change, color change, bubbles, solid formed, liquid formed
Explain the Law of Conservation of Mass and how it relates to chemical reaction Mass cannot be created nor destroyed. meaning that the amount of each chemical needs to be the same on both sides of the reaction.
differentiate between coefficients and supscripts in a chemical reaction A coefficient affects the entire compound behind it. A subscripts only the elements attached to it
balance the following reactions: NF3=N2+F2 AlCl3+K2SO4=KCl+Al(SO4)3 C4H10+O2=CO2+H2O Pb(OH)2+HCl=H2O+PbCl2 2NF3=N2+2F3 2AlCl3=6KCl+Al2(SO4)3 2C4H10+13O2=8CO2+10H2O Pb(OH)2+2HCl=2H2O+PbCl2
Write the balanced chemical equation for the following reaction: Solid Aluminium reacts with oxygen gas to create solid aluminium oxide 2Al+O2=2AlO
chemical reaction the process by which substances collide with enough energy that new bonds are formed between atoms, thus creating new substances.
reactants Starting substance "Ingredients"
products ending substance what is made
aqueous dissolved in water
Created by: Kamryn7
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