Flashcards in Unit 2 Deck (28):
Define the law or conservation of mass
The total mass of the reactants is equal to the total mass of the products
When using a skeleton equation, add __ in front of the formulas following the ?
Coefficients, Law of conservation of mass
What are the super seven
Seven elements that are diatomic
List the super seven
H O F Br I N Cl
Elements that exist as 2 identical atoms bonded covalently to each other
Lost 5 ways a chemical reaction has occurred
Change in state
Release of energy
C(x)H(y) + ____ ==> ?
O2 ==> CO2 + H2O
A single compound breaks down into elements or simpler compounds
If heat is required for decomposition, what is it called?
The oxide burning carbon produces what?
The oxide burning hydrogen produces what?
Reaction of a substance with oxygen to produce oxides + heat + light
Element reacts with a compound to form a new element and new compound
A passive onlooker that does not participate in the reaction
Metals react by losing what
Losing valence electrons
The more active metal displaces the less active what
C(x)H(y) + O2 ==> ?
C + CO + CO2 + H2O
If the fuel is a hydrocarbon (_ & _ only) the oxides are what?
F and H
Why does incomplete combustion occur
Due to fuel impurities and or oxygen mixtures
Hydrocarbons only burn completely with enough what?
List 2 covleats for complete combustion
Fuel is pure
Oxygen is pure
Speeds up a reaction but isn't consumed in reaction
Bases break apart to form what?
A negatively charged hydroxide
An acid dissolves in water because?
It donates hydrogen ions
Base = ?
Metal + O2 + H2O
Acid = ?
Non metal + O2 + H2O
A base turns
An acid turns