anatomy 2.3 - energy and chemical reactions expected learning outcomes

how are chemical reactions symbolized by chemical equations?

using formulas, numbers, and specialized arrows

where are the reactants written in an equation?

left side

where are the products written in an equation?

right side

chemical reaction

process in which a covalent or ionic bond is formed or broken

decomposition reaction

Large molecule breaks down into two or more smaller ones

synthesis reaction

two or more small molecules combine to form a larger one

exchange reactions

two molecules exchange atoms or group of atoms

what are the factors that govern the speed of direction of a reaction?

reactant concentration, temperature, catalysts, and the chemical nature of the substances

what is metabolism’s 2 divisions?

catabolism and anabolism

catabolism

energy-releasing (exergonic) decomposition reactions, breaks covalent bonds, produces smaller molecules

anabolism

energy storing (endergonic) synthesis reactions, requires energy input, production of protein or fat

oxidation

a chemical reaction in which a molecule gives up electrons and releases energy

reduction

chemical reaction in which a molecule gains electrons and energy, molecule is reduced when it accepts electrons