Semester 1 MidExam 2023

Front

What does the periodic law state?

Back

The periodic law states that the properties of elements are periodic functions of their atomic numbers, allowing some properties to be predicted based on their position in the periodic table.

Front

What are p-block elements?

Back

P-block elements are found on the right side of the periodic table and are primarily nonmetals, including elements like carbon, nitrogen, and oxygen.

Front

What is an extensive property of matter?

Back

An extensive property is a property that depends on the amount of matter in a sample, such as volume, mass, and total energy.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

What are lanthanides?

Back

Lanthanides are the 15 elements with atomic numbers from 57 (lanthanum) to 71 (lutetium), known for their similar properties and are often used in electronics and magnets.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are crucial in determining how an element reacts chemically.

Front

What are nonmetals?

Back

Nonmetals are elements that typically have poor conductivity of heat and electricity, and they are found on the right side of the periodic table.

Front

What is the difference between extensive and intensive properties?

Back

Extensive properties depend on the amount of matter (e.g., mass, volume), while intensive properties do not depend on the amount of matter (e.g., density, boiling point).

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What are actinides?

Back

Actinides are the 15 elements with atomic numbers from 89 (actinium) to 103 (lawrencium), known for being radioactive and used in nuclear applications.