(Updated) Chemistry Unit Exam

What are the three subatomic particles in an atom?

• Proton, Neutron, Electron

• Proton, Electron, Quark

• Neutron, Electron, Photon

• Proton, Neutron, Photon

Where is the atomic number found on the periodic table?

• The number below the name

• Number on the top left corner

• Number with a +/-

• subtract mass # from the ion charge

What does WHMIS stand for?

• Workplace Hazardous Materials Information System

• Workplace and Household Materials Information System

• Worker Hazardous Materials Information System

• White House Materials Information System

What does this symbol mean?

• Flammable

• Explosives

• Oxidising Agent

• Corrosive

What does this Symbol means?

• Corrosive

• Irritant

• Poison

• Carcinogenic

How do you calculate the number of neutrons in an atom?

• Atomic number - Protons

• Mass number + Atomic number

• Mass number - Atomic number

• Electrons - Atomic Number

What is an isotope?

• Atoms with different atomic numbers

• Atoms with the same mass number

• Atoms of the same element with different numbers of protons

• Atoms of the same element with different numbers of neutrons

What does an electron dot diagram represent?

• atomic number and mass number

• all electrons in an atom

• protons and neutrons in the nucleus

• valence electrons of an atom

Which direction do periods run on the periodic table?

• horizontally

• vertically

• diagonally

• randomly

What do elements of the same group have in common?

• same number of valence electrons

• same number of protons

• same atomic mass

• same number of neutrons