Chemistry Final Exam Review Quizs 2025

a substance that is the building block of all matter (made of one kind of atom).

• element

• atom

• compound

• mixture

Elements that have atoms with stable valence electron configurations (2 or 8 valence electrons) and are all gases are located in which group of the periodic table of elements?

• Group 1

• Group 2

• Group 17

• Group 18

Where are the nonmetals located on the periodic table? 

• Blue
• Red
• Green

What is the role of an electron in an atom?

• Electrons live inside the nucleus and carry a neutral charge.
• Electrons circle the nucleus and have a positive charge.
• Electrons circle the nucleus and have a negative charge.
• Electrons live inside the nucleus and have a negative charge.

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction. 

Opposite charges _______________.

• avoid

• attract

• push

• repel

What is Jimmy?

• Electron

• Proton

• Atomic

• Neutron

Is this equation balanced?

• yes
• no
• Not enough information
• Left side is balanced

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Valence electrons are electrons in the shell

• furthest from the nucleus

• closest to the nucleus

• having the lowest energy level

• that has the fastest electrons