reacciones quimicas

    Master this deck with 16 terms through effective study methods.

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    What are chemical transformations?

    New substances form while others disappear.

    What defines a physical transformation?

    Substances remain the same before and after.

    What is a chemical reaction?

    Reactants change into products.

    What is a chemical equation?

    It represents a chemical reaction.

    What are stoichiometric coefficients?

    Numbers that balance atoms in a reaction.

    What does the law of conservation of mass state?

    Mass of reactants equals mass of products.

    What happens during a chemical reaction?

    Bonds break and new bonds form.

    What are endothermic reactions?

    They absorb energy in the form of heat.

    What distinguishes exothermic reactions?

    They release energy as heat.

    How does temperature affect reaction speed?

    Higher temperature increases molecular speed.

    What is a combustion reaction?

    A substance reacts with O2 to produce CO2 and H2O.

    What is a decomposition reaction?

    A single substance breaks down into multiple products.

    What is a synthesis reaction?

    Two or more substances combine to form one product.

    What causes acid rain?

    Acids form from pollutants reacting with water.

    What is the greenhouse effect?

    Gases trap heat, raising Earth's temperature.

    What is the ozone layer depletion?

    Reduction of ozone thickness due to CFCs.