Chemistry H Semester I Final Review Part I

What is an atom?

• The smallest unit of a chemical element that retains its chemical properties

• A type of molecule

• A kind of chemical reaction

• A measurement unit for mass

What are the 3 subatomic particles in an atom?

• Protons, Neutrons, Electrons

• Protons, Electrons, Atoms

• Neutrons, Electrons, Molecules

• Protons, Neutrons, Molecules

An atom's protons and neutrons are concentrated in a dense, central region called the...

• electron cloud
• nucleus
• proton
• neutron

What two subatomic particles are located inside the nucleus?

• Electrons and neutrons

• Protons and electrons

• Protons and neutrons

What are the charges of each subatomic particle?

• Proton: +1, Neutron: 0, Electron: -1

• Proton: 0, Neutron: +1, Electron: -1

• Proton: +1, Neutron: -1, Electron: 0

• Proton: -1, Neutron: +1, Electron: 0

An atom with atomic number 6 would have how many protons?

• 6
• 12
• 3
• cannot be determined 

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

What is the average atomic mass?

• The sum of the masses of its isotopes, each multiplied by its natural abundance

• The total number of protons in an element

• The total number of neutrons in an element

• The weight of an electron

Where are the Alkali Metals found on the periodic table?

• Group 1

• Group 2

• Group 3-12

• Group 18

Where are the Alkaline Earth Metals found on the periodic table?

• Group 1

• Group 2

• Group 3-12

• Group 18