TEST FULL QUESTIONS AND CORRECT
ANSWERS 2026
◉ Avogadro's number. Answer: number of representative particles
in a mole, 6.02 X 10^23
◉ Basic structures of atoms. Answer: There is a nucleus in the center
surrounded by an electron cloud or field
◉ Quantum numbers. Answer: Quantum numbers describe values of
conserved quantities in the dynamics of a quantum system. In the
case of electrons, the quantum numbers can be defined as "the sets
of numerical values which give acceptable solutions to the
Schrodinger wave equation for the hydrogen atom"
◉ Common compounds. Answer: Water (H2O), table salt (NaCL);
carbon dioxide (CO2); baking soda (NaHCO3); carbon monoxide
(CO); sand or glass (SiO2)
◉ Periodic properties. Answer: chemical or physical properties that
vary among elements according to trends that repeat as atomic
number increases
, ◉ What are the periodic properties?. Answer:
◉ Element (on periodic table). Answer:
◉ Atomic number is the same as. Answer: number of protons
◉ Atomic mass is the same as. Answer: Number of protons and
neutrons
◉ Different types of chemical bonding. Answer: metallic, covalent,
ionic
◉ What is covalent bonding and how does it work?. Answer: when
atoms share one or more pairs of electrons. They have similar
electronegativities
◉ What is ionic bonding?. Answer: when atoms transfer electrons.
Large difference in electronegativity
◉ Examples of ionic bonds. Answer: NaCl
Cs2O
MgO
NH4NO3