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What does the law of conservation of mass state?
What does the law of conservation of mass state?
- Mass is conserved only in certain types of chemical reactions
- Mass can be created or destroyed in a completely closed system
- Mass will not be created or destroyed in a chemical reaction in a completely closed system (correct)
- Mass will not be created or destroyed in an open system
Who was the leading chemist in the 18th century known for his work on the conservation of mass?
Who was the leading chemist in the 18th century known for his work on the conservation of mass?
- Marie Curie
- Joseph Priestley
- Dmitri Mendeleev
- Antoine Lavoisier (correct)
What did Antoine Lavoisier name as part of his research focused on combustion?
What did Antoine Lavoisier name as part of his research focused on combustion?
- Hydrogen
- Nitrogen
- Carbon
- Oxygen (correct)
What can a chemist calculate using the law of conservation of mass in a chemical reaction?
What can a chemist calculate using the law of conservation of mass in a chemical reaction?
In what type of system does the law of conservation of mass apply?
In what type of system does the law of conservation of mass apply?
Which type of material can act as effective superconductors?
Which type of material can act as effective superconductors?
Which compound is an example of a diamagnetic material?
Which compound is an example of a diamagnetic material?
What determines the properties of elements, according to the text?
What determines the properties of elements, according to the text?
Which type of material is characterized by a weak, positive susceptibility to magnetic fields?
Which type of material is characterized by a weak, positive susceptibility to magnetic fields?
Which element is an example of a paramagnetic material?
Which element is an example of a paramagnetic material?
Which rule dictates that when electrons are placed in orbitals with the same energy, they will each go into different orbitals before doubling up?
Which rule dictates that when electrons are placed in orbitals with the same energy, they will each go into different orbitals before doubling up?
What does the law of conservation of mass state?
What does the law of conservation of mass state?
What determines the reaction of materials to a magnetic field?
What determines the reaction of materials to a magnetic field?
What principle states that no two electrons in the same atom can have identical quantum numbers?
What principle states that no two electrons in the same atom can have identical quantum numbers?
What is the characteristic of diamagnetic materials in relation to magnetic fields?
What is the characteristic of diamagnetic materials in relation to magnetic fields?
What determines the filling of orbitals of equal energy?
What determines the filling of orbitals of equal energy?
Which principle states that no two electrons in the same atom can have identical quantum numbers?
Which principle states that no two electrons in the same atom can have identical quantum numbers?
What determines the reaction of materials to a magnetic field?
What determines the reaction of materials to a magnetic field?
What type of electrons are paired with opposite spins that result in a net spin of 0?
What type of electrons are paired with opposite spins that result in a net spin of 0?
In a chemical reaction, what does the law of conservation of mass state?
In a chemical reaction, what does the law of conservation of mass state?
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Study Notes
Conservation of Mass and Electron Configuration
- Table salt, sodium chloride, is created from a reaction between sodium metal and chlorine gas
- The law of conservation of mass states that the mass of the reactants always equals the mass of the products in a chemical reaction
- In a closed system, the mass on the left side of the arrow always equals the mass on the right side of the arrow in a chemical reaction
- Chemical reactions can be described using word equations or chemical equations, with the latter needing to be completely balanced to demonstrate the conservation of mass
- Electron configuration determines the reaction of materials to a magnetic field
- Electrons are placed in atomic orbitals and follow specific laws for distribution and placement
- Hund's rule dictates the filling of orbitals of equal energy
- Pauli's Exclusion Principle states that no two electrons in the same atom can have identical quantum numbers
- Diamagnetic electrons are paired electrons with opposite spins that cancel each other out, resulting in a net spin of 0
- Diamagnetic materials have a slight, negative susceptibility to magnetic fields
- The net spin of an orbital influences the magnetic properties of a material
- The creation of magnetism in materials within a magnetic field depends on the configuration of electrons
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