Unit 6 Flashcards
What is the purpose of the arrow in a chemical reaction?
It stands for produces it shows which way the chemical reaction is going.
State the law of conservation of mass.
In any given chemical reaction, the total mass of the reactants equals the total mass of the products.
What is the difference between a skeleton and balanced chemical equation?
The balanced chemical equation account for all the atoms in a reaction in their ratios. There are equal amounts of each type of Adam/ion I’m both sides, while in a skeleton equation there are not.
What is a subscript?
It indicates the number of items within a compound
What is a coefficient?
It indicates the number of molecules of a compound, or the number of atoms if an element is not part of compound.
What is the only thing you can change when balancing a skeleton equation?
Only coefficients can be changed in a chemical equation. Changing the subscripts would produce an entirely different or impossible compound than the original product.
What is a decomposition reaction?
This occurs when one complex substance breaks down into simpler ones.
What is a synthesis reaction?
A reaction where simple substances Bontince for more complex ones.
What is the single displacement reaction?
A reaction where an element displaces another element in an ionic compound. Metals displace metals and nonmetals displaced nonmetals.
What is a double displacement reaction?
A reactions where the anions in two ionic compounds switch.
What is combustion?
Combustion is a chemical reaction in a fuel burns or reacts quickly with oxygen.
What is the difference between complete combustion and incomplete combustion?
With incomplete combustion oxygen supply is limited.
What is produced when hydrocarbons cumbust?
Carbon dioxide and water.
What is produced when hydrocarbons incompletely combust?
Carbon (soot) and/or carbon monoxide gas.
What is corrosion?
Corrosion is the breakdown of metal as a result of chemical reactions with its environment.
