ASC exam study questions & answers
2024/2025
According to the Lewis definition, an acid is a species - ANSWERSaccepting a pair of electrons
In what respect does an atom of magnesium differ from a magnesium ion (Mg 2+) - ANSWERSThe ion
has a more stable electron arrangement than the atom
Atomic number = 16. How many protons? - ANSWERS16
Which is the most complete and best description of a covalent bond - ANSWERSA system of two nuclei
where each atom donates one electron to the other, thus forming a bond
Which is a proper description of chemical equilibrium - ANSWERSReactant molecules are forming
products as fast as product molecules are reacting to form reactants.
Which operation will increase the yield of ammonia in the equilibrium mixture - ANSWERSDoubling the
concentration of hydrogen
Chemical equilibrium is the result of - ANSWERSopposing reactions attaining equal speeds.
In which gas are the forces between molecules strongest? - ANSWERSH2O
When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number of ions
present will be approximately - ANSWERShalf as great as before mixing.
Oxygen and ozone have the formulas O2 and O3 respectively. They are - ANSWERSallotropes
2024/2025
According to the Lewis definition, an acid is a species - ANSWERSaccepting a pair of electrons
In what respect does an atom of magnesium differ from a magnesium ion (Mg 2+) - ANSWERSThe ion
has a more stable electron arrangement than the atom
Atomic number = 16. How many protons? - ANSWERS16
Which is the most complete and best description of a covalent bond - ANSWERSA system of two nuclei
where each atom donates one electron to the other, thus forming a bond
Which is a proper description of chemical equilibrium - ANSWERSReactant molecules are forming
products as fast as product molecules are reacting to form reactants.
Which operation will increase the yield of ammonia in the equilibrium mixture - ANSWERSDoubling the
concentration of hydrogen
Chemical equilibrium is the result of - ANSWERSopposing reactions attaining equal speeds.
In which gas are the forces between molecules strongest? - ANSWERSH2O
When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number of ions
present will be approximately - ANSWERShalf as great as before mixing.
Oxygen and ozone have the formulas O2 and O3 respectively. They are - ANSWERSallotropes
