Chemical Change
The process of breaking chemical bonds and reforming new bonds to create new substances.
What is chemical change?
The name for the compounds on the left side of the arrow.
What is the reactants?
The general equation A + B --> AB describes this type of reaction.
What is an addition reaction?
The atomic mass of an atom.
The number with decimals on the periodic table symbol.
The scientist who established the law of conservation of mass.
Who is Lavoisier?
When atoms rearrange.
What is chemical change?
The whole number placed in front of a molecular formula in a chemical equation.
What is a coefficient?
The general equation AB --> A + B describes this type of reaction.
What is a decomposition reaction?
The name for one mole of a substance.
What is the Avogadro number?
The number of oxygen atoms in a molecule of Mg(OH)2.
What is 2?
The name for all substances created in a chemical reaction.
What is the products?
The balanced chemical equation for S8 + O2 --> SO3.
What is S8 + 12O2 --> 8SO3?
The general equation AX + B --> BX + A describes this type of reaction.
What is a single displacement reaction?
The mass, in grams, of the Avogadro number of molecules in a compound.
What is the molar mass?
A solid that forms and is insoluble in the reaction mixture.
What is a precipitate?
Evidence for a chemical change.
What is color change, temperature change, production of bubbles, formation of a precipitate, production of light, change in smell, or volume change?
The balanced chemical equation for H2SO4 + NH4OH --> H2O + (NH4)2SO4.
What is H2SO4 + 2NH4OH --> 2H2O + (NH4)2SO4?
The general equation AX + BY --> AY + BX describes this type of reaction.
What is a double displacement reaction?
The sum of the atomic mass values of the atoms in a chemical formula.
What is the formula mass?
The number of atoms of reactants in the chemical equation C6H12O6 + 6O2 --> 6CO2 + 6H2O.
What is 36?
The law that is always obeyed during a chemical change.
The law of conservation of mass.
The balanced chemical equation for C7H6O2 + O2 --> CO2 + H2O.
What is 2C7H6O2 + 15O2 --> 14CO2 + 6H2O?
The general name for chemical reactions combing oxygen with other reactants to release large amounts of energy in the form of heat and light.
What is combustion?
The numerical value of the Avogadro Number.
What is 6.02 x 1023?
The total mass of the products of a reaction is equal to the total mass of the reactants.
What is the law of conservation of mass?