Semester 1 Final Exam

Front

What is the primary focus of the study of chemistry?

Back

The study of matter and its interactions.

Front

What is ionization energy?

Back

The energy needed to remove an electron from an atom.

Front

Which element has a full outer shell of valence electrons in its ground state?

Back

Neon.

Front

According to the Rutherford Model, what does the nucleus of an atom contain?

Back

Almost all the mass of the atom.

Front

What is the noble gas electron configuration for Calcium (Ca)?

Back

[Ar]4s².

Front

Define 'atom'.

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is a valence electron?

Back

An electron in the outer shell of an atom that can participate in forming chemical bonds.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.