Keeping Track of Atoms
Balanced Chemical Equations
The Mole Concept
Composition of materials
Conservation in the community
100
states that matter is neither created nor destroyed.
What is Law of conservation of matter
100
How many oxygen atoms are in C3H5(NO3)3
What is Nine
100
Chemists have devised a counting unit called
What is the Mole
100
The percent by mass of each material found in an item is called
What is Percent composition
100
Resources such as petroleum are regarded as
What is Non renewable resources
200
the number of atoms of each element that is the same on the reactant and product sides.
What is balanced chemical equation
200
All chemical changes observed in matter can be interpreted as the
What is rearrangement of atoms.
200
The number 6.02 x 10^23 represents
What is Avagadro's Number
200
Percent composition is usually based on
What is Mass
200
resources that can be replenished by natural processes
What is Renewable resources
300
Definition: generalizations of countless observations.
What is scientific law
300
The first step you should take in balancing a chemical equation
What is atom inventory
300
The mole concept is based on the idea that the mass of one particle is
What is Known
300
The idea of percent composition helps geologists describe how much metal or mineral is present in a particular
What is ore
300
an approach that aims to eliminate pollution in industrial settings
What is Green Chemistry
400
they are used to balance equations, consistent with the law of conservation of matter.
What is Coefficients.
400
Use coefficients to balance the number of atoms of an element on
What is Both sides of the equation
400
Knowing the mass of one unit enables us to count by
What is weighing
400
Hematite and Magnetite are two iron containing ores. If all other factors were equal, which ore would you mine for iron?
What is Magnetite
400
Each person in this country throws away an average of about ____ kg(__lb)of unwanted materials daily.
What is 2kg(4lb)
500
The symbols (s),(aq),(l),(g) represent
What is states of reactants and products or solid,aqueous,liquid,gas
500
Coefficients affect every atom in the
formula or substance
500
The atomic weights of elements can be used to find the mass of one mole of any substance.
What is Molar mass
500
The atom inventory for Cu3(CO3)2(OH)2
What is 3Cu,2C,8O,2H
500
What are the three steps in a products life cycle disposal.
What is recycling, using landfills, and burning wastes to produce energy
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