Unit 7 Vocab

Catalyst

________ (p. 323)- a substance that speeds up the reaction but is not used up in the reaction, neither a reactant nor a product, so its formula is written above the arrow.

Coefficients

________ (p. 325)- small whole numbers that are placed in front of the formulas in an equation in order to balance it.

replacement reaction

Single- ________ (p. 333)- a chemical change in which one element replaces a second element in a compound, note that both the reactants and the products consist of an element and a compound.

Net ionic equation

________ (p. 343)- an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change.

Chemical equation

________ (p. 323)- a representation of a chemical reaction; the formulas of the reactants (on left) are connected by an arrow with the formulas of the products (on right)

Skeleton equation

________ (p. 323)- a chemical equation that does not indicate the relative amounts of the reactants and products.

Decomposition reaction

________ (p. 332)- a chemical change in which a single compound breaks down into two or more simpler products.

activity series

lists metals in order of decreasing reactivity and a reactive metal will replace any metal listed below it in activity series

balanced equation

each side of the equation has the same number of atoms of each element and mass is conserved

catalyst

a substance that speeds up the reaction but is not used up in the reaction, neither a reactant nor a product, so its formula is written above the arrow

chemical equation

a representation of a chemical reaction; the formulas of the reactants (on left) are connected by an arrow with the formulas of the products (on right)

coefficients

small whole numbers that are placed in front of the formulas in an equation in order to balance it

combination reaction

a chemical change in which two or more substances react to form a single new substance

combustion reaction

a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light, always with the reactant oxygen and often hydrocarbon

complete ionic equation

an equation that shows dissolved ionic compounds as dissociated free ions

decomposition reaction

a chemical change in which a single compound breaks down into two or more simpler products

double-replacement reaction

a chemical change involving an exchange of positive ions between two compounds, aka double-displacement reactions, usually in aqueous solution and often produce precipitate (gas) or molecular compound like water

net ionic equation

an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change

single-replacement reaction

a chemical change in which one element replaces a second element in a compound, note that both the reactants and the products consist of an element and a compound

skeleton equation

a chemical equation that does not indicate the relative amounts of the reactants and products

spectator ion

an ion that appears on both sides of an equation and is not directly involved in the reaction