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Chemical Reaction
Term | Definition | Personal Definition | Chemical Equations |
---|---|---|---|
Chemical reaction | process of rearranging atoms by breaking and forming chemical bonds to form new compounds | Change occurring when two or more things come together | |
Chemical equation | represents a chemical reaction using chemical formulas of the substances involved in the chemical reaction. | Shows how things combine or interact | |
Reactants | starting material in a chemical reaction | Beginning of two or more things combining | |
Products | ending material in a chemical reaction | Two or more things combined | |
Yield sign | arrow in the equation that separates the reactants from the products | A symbol that separates what is going to combine and what is fully combined | |
Coefficient | Large number found before the chemical formula in an equation representing the number of particles of that compound | Large number that tells you total amount of each particle | |
Subscript | small number found after an element WITHIN a chemical formula representing the number of atoms of the element found in one molecule (particle) of the substance | Small number that represents the number of elements | |
Aqueous | state of matter where a compound is dissolved in water | Something that can be broken down by water | |
combination reaction | Two elements or molecules combine to form one product | Two things forming to make one | A + B → AB N2 (g) + 3 H2 (g) ⇒ 2 NH3 (g) |
Decomposition reaction | One compound or molecule breaks apart to form multiple products | Shrapnel Reaction | AB → A + B Al2(CO3)3 (s) ⇒ Al2O3 (s) + 3 CO2 (g) |
Single replacement reaction | reaction in which one element is substituted for another element in a compound | Replacement reaction | AB + C → AC + B Ca (s) + 2 H2O (l) ⇒ Ca(OH)2 (aq) + H2 (g) |
Double replacement | reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds | Two things switching places | AB + CD → CB + AD BaCl2 (aq) + Na2SO4 (aq) ⇒ 2 NaCl (aq) + BaSO4 (s) |
Combustion reaction | chemical reaction that occurs between a fuel and an oxidizing agent that produces energy, usually in the form of heat and light | TNT Reaction | CH2CH3 + O2 → CO2 + H2O C5H12 (l) + 8 O2 (g) ⇒ 6 H2O (g) + 5 CO2 (g) |