Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
Area of study that examines quantities of substances consumed and produced in chemical reactions
|
Stoichiometry
|
|
|
Built on understanding of atomic masses, chemical formulas, and law of conservation of mass
|
Stoichiometry
|
|
|
Chemical reactions are represented in a concise way by ____
|
Chemical Equations
|
|
|
+
|
Reacts with
|
|
|
--->
|
Produces
|
|
|
Chemical reactions to the left of the arrow (in the balancing of chemical equations) represent the starting substances called___
|
Reactants
|
|
|
Chemical formulas to the right of the arrow (in the ballancing of chemical equations) represents substances produced in the reaction called _____
|
Products
|
|
|
Numbers infront of formulas
|
Coefficients
|
|
|
Indicates the relative numbers of molecules of each kind involved in the reaction
|
Coefficients
|
|
|
Atoms are neither ____ nor ___ in any reaction, causing chem equations to have the same amount of atoms on each elements on either side of the arrow for chem equations
|
Created nor Destroyed
|
|
|
The symbol of a ___is often placed above the arrow to indicated the addition of heat
|
Triangle
|
|
|
Two or more substances react to form one product in ___
|
Combonation Reactions
|
|
|
Whe nelements combine to form componds
|
Combonation Reactions
|
|
|
When a combination reaction occurs between a metal and nonmetal, the product is an __
|
Ionic Solid
|
|
|
One substance undergoes a reaction to produce two or more other substances in __
|
Decomposition Reaction
|
|
|
Many compounds undergo decomposition reactions when __
|
Heated
|
|
|
Rapid reactions that produce a flame
|
Combustion Reactions
|
|
|
The ___ ____ of a substance is the sum of the atomis weights of each atom in its chemical formula
|
Formula Weight
|
|
|
Represented by the chemical formula of a substance
|
Formula Units
|
|
|
Percentage by mass contributed by each element in the substance
|
Percentage Composition
|
|
|
Avogadro's Number
|
6.022x10"23
|
|
|
Mass in grams per mole
|
Molar Mass
|
|
|
The molar mass (in g/mol) of any substance is always numerically equal to its __ __ (in amu)
|
Formula Weight
|
|
|
__ ____ for a substance tells the relative number of atoms of each element it contains
|
Empirical Formula
|
|
|
For any compound, the formula obtained from percentage compositions is allways the __ ___
|
Empirical Formula
|
|
|
The subscripts in the molecular formula of a substance are always whole-number multiple of the ___ subscripts in its empirical formula
|
Corresponding
|
|
|
Means "based on observation and experiment"
|
Empirical
|
|
|
Coefficients in a chemical equation represent the relative numbers of ___ involved in a reaction
|
Molecules
|
|
|
The recant that is completely consumed in reaction
|
Limiting Recant or Limiting Regent
|
|
|
Other recants besides the Limiting Recant(or Regent) are sometimes called ___
|
Excess Reactants or Excess Reagents
|
|
|
Quality of product that is calculated to form when all of the limiting reactant reacts
|
Theoretical Yeild
|
|
|
The amount of product actually obtained in a reaction
|
Actual Yeild
|
|
|
the actual yeild is almost always less than (and can never be greater than) the __ __
|
Theoretical Yield
|
|
|
A mole of any substance is ____ ____ of formula units of that substance
|
Avogadro's Number (6.022x10^23)
|
|
|
Mass of mole of atoms, molecules, or ions that equals the formula weight of that material in grams
|
Molar Mass
|
|
|
Determined from substances percent composition by calculating relative numver of moles of each atom in 100g of the substance
|
Empirical Formula
|
