Podcast
Questions and Answers
What defines an element's identity?
What defines an element's identity?
- Atomic mass
- Number of protons (correct)
- Number of electrons
- Number of neutrons
What is the difference between isotopes of the same element?
What is the difference between isotopes of the same element?
- Atomic mass
- Number of protons
- Number of electrons
- Number of neutrons (correct)
How is the relative atomic mass of a sample calculated?
How is the relative atomic mass of a sample calculated?
- By subtracting the number of neutrons from the atomic mass
- By adding the masses of all isotopes
- By dividing the atomic mass by the number of protons
- By multiplying the isotope's percentage by its mass and adding the results together (correct)
What was the main discovery of Ernest Rutherford's alpha scattering experiment?
What was the main discovery of Ernest Rutherford's alpha scattering experiment?
What is the concept of electron shells proposed by Niels Bohr?
What is the concept of electron shells proposed by Niels Bohr?
What is the main difference between Dalton's atomic model and J.J. Thompson's plum pudding model?
What is the main difference between Dalton's atomic model and J.J. Thompson's plum pudding model?
What is Avogadro's number also known as?
What is Avogadro's number also known as?
What is the relative atomic mass of an atom based on?
What is the relative atomic mass of an atom based on?
What is the main concept behind the law of conservation of mass?
What is the main concept behind the law of conservation of mass?
What is the purpose of calculating the relative formula mass?
What is the purpose of calculating the relative formula mass?
What is the unit of concentration in quantitative chemistry?
What is the unit of concentration in quantitative chemistry?
What is the symbol for relative formula mass?
What is the symbol for relative formula mass?
What is the purpose of the balance symbol equation in quantitative chemistry?
What is the purpose of the balance symbol equation in quantitative chemistry?
What happens to the atoms when heating up calcium carbonate?
What happens to the atoms when heating up calcium carbonate?
What is the relationship between a decimeter cubed and a liter?
What is the relationship between a decimeter cubed and a liter?
What is the name of the molecule made up of 60 carbon atoms joined together?
What is the name of the molecule made up of 60 carbon atoms joined together?
What is silicon dioxide also known as?
What is silicon dioxide also known as?
What is the first step in calculating the moles of a substance?
What is the first step in calculating the moles of a substance?
