Chemistry 1st Fall Final Review

Front

What is a proton?

Back

A positively charged particle with a mass of 1 amu.

Front

Which group of elements is considered stable?

Back

Group 18 (Noble gases) are stable due to their full valence electron shells.

Front

What VSEPR structure does CO2 form?

Back

CO2 forms a linear structure.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What does the period number in the periodic table indicate?

Back

The period number indicates the number of energy levels in an atom.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an element reacts chemically with other elements.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.