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Questions and Answers
What is the smallest part of an element that can exist?
What is the smallest part of an element that can exist?
- Compound
- Atom (correct)
- Isotope
- Molecule
Which chemical process involves the formation of one or more new substances?
Which chemical process involves the formation of one or more new substances?
- Simple distillation
- Chemical reaction (correct)
- Fractional distillation
- Chromatography
How can compounds be separated into elements?
How can compounds be separated into elements?
- Simple distillation
- Filtration
- Chemical reactions (correct)
- Crystallisation
What does the chemical symbol 'Na' represent?
What does the chemical symbol 'Na' represent?
Which physical process can be used to separate mixtures without involving chemical reactions?
Which physical process can be used to separate mixtures without involving chemical reactions?
What is a compound composed of?
What is a compound composed of?
What is the relative charge of a proton?
What is the relative charge of a proton?
Why do different elements have different numbers of protons?
Why do different elements have different numbers of protons?
What is the relative mass of an electron?
What is the relative mass of an electron?
What is the significance of the mass number of an atom?
What is the significance of the mass number of an atom?
How are isotopes of an element different from each other?
How are isotopes of an element different from each other?
What was the main contribution of the plum pudding model to the understanding of the atom?
What was the main contribution of the plum pudding model to the understanding of the atom?
What does the relative atomic mass of an element take into account?
What does the relative atomic mass of an element take into account?
What was the conclusion drawn from the alpha particle scattering experiment?
What was the conclusion drawn from the alpha particle scattering experiment?
How did Neil Bohr contribute to the understanding of atomic structure?
How did Neil Bohr contribute to the understanding of atomic structure?
What did James Chadwick's work provide evidence for?
What did James Chadwick's work provide evidence for?
Which experiment led to the conclusion that some alpha particles were deflected by a small concentration of positive charge in the atom?
Which experiment led to the conclusion that some alpha particles were deflected by a small concentration of positive charge in the atom?
What does 'atomic number' represent?
What does 'atomic number' represent?
How would you calculate the average atomic mass of an element using isotopic abundance and mass?
How would you calculate the average atomic mass of an element using isotopic abundance and mass?
In the electronic structure of an atom, where do electrons occupy initially?
In the electronic structure of an atom, where do electrons occupy initially?
What does the electronic structure of an atom tell us?
What does the electronic structure of an atom tell us?
For an atom with electronic structure 2,8,1, how many electrons are in shell 2?
For an atom with electronic structure 2,8,1, how many electrons are in shell 2?
If an isotope has a mass of 16 and an abundance of 60%, what is its contribution to the average atomic mass?
If an isotope has a mass of 16 and an abundance of 60%, what is its contribution to the average atomic mass?
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