(Chem-1) 2024 Final Exam Review

Front

What is the correct name for the formula K3PO3?

Back

potassium phosphite

Front

Which electromagnetic wave has the highest energy?

Back

X rays

Front

How many moles of aluminum oxide are needed to react completely with 4.0 mol of aluminum in the reaction 2Al(s) + 3FeO(s) → 3Fe(s) + Al2O3(s)?

Back

2.0 mol

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

Which of the following is insoluble according to solubility rules: AgC₂H₃O₂, Ag₂CO₃, KI, KNO₃?

Back

Ag₂CO₃

Front

Define the term 'mole' in chemistry.

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10^23 particles.

Front

What is the formula for calculating moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol)

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed through the transfer of electrons from one atom to another, while a covalent bond is formed by the sharing of electrons between atoms.

Front

What is the pH scale and what does it measure?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.