Semmelweis entrance exam Chemistry TEST BANK
QUESTIONS 2026/2027 AND HIGH YIELD PRACTICE
QUESTIONS COMPLETE ACCURATE EXAM APPROVED
QUESTIONS AND CORRECT VERIFIED SOLUTIONS (100%
CORRECT VERIFIED ANSWERS) CURRENTLY UPDATED
VERSION 2026 EDITION
Periodic properties
chemical or physical properties that vary among elements according to
trends that repeat as atomic number increases
What are the periodic properties?
Element (on periodic table)
Atomic number is the same as
number of protons
Atomic mass is the same as
Number of protons and neutrons
,Different types of chemical bonding
metallic, covalent, ionic
What is covalent bonding and how does it work?
when atoms share one or more pairs of electrons. They have similar
electronegativities
What is ionic bonding?
when atoms transfer electrons. Large difference in electronegativity
Examples of ionic bonds
NaCl
Cs2O
MgO
NH4NO3
, Examples of covalent bonds
F2, O2, N2, H2, CL2, HCL, H2O
What is metallic bonding?
the chemical bonding that results from the attraction between metal
atoms and the surrounding sea of electrons
What is hydrogen bonding?
Hydrogen bonding is the strongest intermolecular force. it only happens
when hydrogen is covalently bonded to fluorine, nitrogen or oxygen
because they're very electronegative and can pull the bonding electrons
away from the hydrogen.
Substances with hydrogen bonding have higher melting and boiling
points because of the extra energy needed to break the hydrogen
bonds.
What is a dipole-dipole force?
The attraction between the positive end of one polar molecule and the
negative end of another
What is a london dispersion force?
weak forces that result from temporary shifts in the density of electrons in
electron clouds
What is the lewis structure?
diagrams that show the bonding between atoms of a molecule and the
lone pairs of electrons that may exist in the molecule.
QUESTIONS 2026/2027 AND HIGH YIELD PRACTICE
QUESTIONS COMPLETE ACCURATE EXAM APPROVED
QUESTIONS AND CORRECT VERIFIED SOLUTIONS (100%
CORRECT VERIFIED ANSWERS) CURRENTLY UPDATED
VERSION 2026 EDITION
Periodic properties
chemical or physical properties that vary among elements according to
trends that repeat as atomic number increases
What are the periodic properties?
Element (on periodic table)
Atomic number is the same as
number of protons
Atomic mass is the same as
Number of protons and neutrons
,Different types of chemical bonding
metallic, covalent, ionic
What is covalent bonding and how does it work?
when atoms share one or more pairs of electrons. They have similar
electronegativities
What is ionic bonding?
when atoms transfer electrons. Large difference in electronegativity
Examples of ionic bonds
NaCl
Cs2O
MgO
NH4NO3
, Examples of covalent bonds
F2, O2, N2, H2, CL2, HCL, H2O
What is metallic bonding?
the chemical bonding that results from the attraction between metal
atoms and the surrounding sea of electrons
What is hydrogen bonding?
Hydrogen bonding is the strongest intermolecular force. it only happens
when hydrogen is covalently bonded to fluorine, nitrogen or oxygen
because they're very electronegative and can pull the bonding electrons
away from the hydrogen.
Substances with hydrogen bonding have higher melting and boiling
points because of the extra energy needed to break the hydrogen
bonds.
What is a dipole-dipole force?
The attraction between the positive end of one polar molecule and the
negative end of another
What is a london dispersion force?
weak forces that result from temporary shifts in the density of electrons in
electron clouds
What is the lewis structure?
diagrams that show the bonding between atoms of a molecule and the
lone pairs of electrons that may exist in the molecule.
