16 Questions
What is the smallest unit of an element that retains its chemical properties?
Atom
Which subatomic particle contributes to the atom's identity and determines its atomic number?
Proton
What does the mass number of an atom represent?
Atom's mass but not its identity
What is defined as the number of protons in an atom's nucleus, unique to each element?
Atomic number
What are atoms of the same element with different numbers of neutrons called?
Isotopes
What is the central core of an atom containing protons and neutrons, and carries a positive charge due to the presence of protons?
Proton
What are the distinct regions around the nucleus where electrons are likely to be found called?
Energy levels
What is the mass and charge of a neutron?
Mass = 1 amu, Charge = 0
What effect do neutrons have on the physical properties of the element?
They affect only the mass, not the physical properties
What term is used to describe atoms of the same element with a different number of neutrons?
Isotopes
How is the 'relative' atomic mass of an element standardized?
By taking an average across all the isotopes of the element
What is used to calculate the 'relative' atomic mass (Ar) of isotopes?
% Abundance in nature
What determines which isotope's mass should be used on the periodic table if there are different isotopes of an element?
The average mass across all isotopes
What is another name for 'Chlorine-35' and 'Chlorine-37' based on their isotopic composition?
'Common' chlorine and 'Rare' chlorine
How many neutrons does each chlorine isotope have?
$^{35}$Cl: 18, $^{37}$Cl: 17
What does 'Ar' stand for in chemistry when discussing isotopes?
Relative atomic mass
Test your understanding of the atomic structure and the use of the periodic table to predict the relative properties of elements based on electron patterns. This quiz covers topics such as atoms, nucleus, protons, neutrons, and the definition of atoms.
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