Chemical Reactions and Equations Flashcards

Vocabulary flashcards for Chemical Reactions and Equations.

Precipitate

Insoluble solid formed after a chemical reaction.

Exothermic Reaction

Reaction releasing heat energy.

Endothermic Reaction

Reaction absorbing heat energy.

Catalyst

Speeds up a reaction without being consumed.

Chemical Reaction

The transformation of a chemical substance into another chemical substance.

Chemical Equation

Representation of a chemical reaction using symbols and formulae of the substances.

Balanced Chemical Equation

Number of atoms of each element in reactants = number of atoms of each element in products.

Combination Reaction

Two or more reactants combine to form single product.

Decomposition Reaction

A single reactant decomposes to form two or more products.

Displacement Reaction

A more reactive element displaces a less reactive element from its compound.

Double Displacement Reaction

Two compounds in a solution react to form two new compounds by exchanging ions.

Oxidation Reaction

A reaction that involves the loss of electrons. Also known as LEO (Loses Electrons Oxidation).

Reduction Reaction

A reaction that involves the gain of electrons. Also known as GER (Gains Electrons Reduction).

Redox Reaction

A reaction in which both oxidation and reduction take place simultaneously.

Corrosion

The process where refined metal is converted to a more chemically stable form such as its oxide, hydroxide, or sulfide.

Rusting

The corrosion of iron, forming reddish-brown ferric oxides.

Combustion Reaction

A rapid reaction between a substance with an oxidant, usually oxygen, to produce heat and light.

Neutralization Reaction

A reaction in which an acid and a base react quantitatively with each other.

Reaction of Zinc with Hydrochloric Acid

Observation: Bubbles of gas are produced, and the zinc metal dissolves. The solution gets warmer.

Reaction: Zn(s) + 2HCl(aq) \rightarrow ZnCl2(aq) + H2(g)

Reaction of Copper(II) Oxide with Sulfuric Acid

Observation: The black solid dissolves, forming a blue solution.

Reaction: CuO(s) + H2SO4(aq) \rightarrow CuSO4(aq) + H2O(l)

Reaction of Iron with Copper(II) Sulfate

Observation: A reddish-brown solid forms on the iron nail, and the blue solution fades.

Reaction: Fe(s) + CuSO4(aq) \rightarrow FeSO4(aq) + Cu(s)

Reaction of Lead(II) Nitrate with Potassium Iodide

Observation: A yellow precipitate forms.

Reaction: Pb(NO3)2(aq) + 2KI(aq) \rightarrow PbI2(s) + 2KNO3(aq)

Reaction of Sodium Hydroxide with Hydrochloric Acid

Observation: The solution gets warmer.

Reaction: NaOH(aq) + HCl(aq) \rightarrow NaCl(aq) + H_2O(l)

Combustion of Methane

Observation: A blue flame is observed, and heat is released.

Reaction: CH4(g) + 2O2(g) \rightarrow CO2(g) + 2H2O(g)

Thermal Decomposition of Copper(II) Carbonate

Observation: A green solid turns