Atoms & the Periodic Table

How is the Periodic Table organized?

• Alphabetically by the names of the elements

• By increasing atomic number, which is the number of protons in an atom

• According to the mass of the elements

• based on the number of electrons in each element

By examining the periodic table, what can you infer about elements in the same group (vertical column)?

• They have similar chemical properties.

• They have the same atomic mass.

• They are isotopes.

In which regions of the periodic table would you find metals and nonmetals?

• Metals on the left, nonmetals on the right

• Metals in the middle, nonmetals on the sides

• Metals on the right, nonmetals on the left

• Metals at the top, nonmetals at the bottom

"Poor conductors of heat and electricity" is a common physical property of nonmetals on the periodic table.

• TRUE

• FALSE

Magnesium (Mg) is located to the right of sodium (Na) because Mg has....

• fewer protons.

• no neutrons.

• no protons.

• more protons.

What is Mendeleev known for?

• creating today's atomic model

• discovering protons

• publishing the first periodic table

• discovering Mendelevium

The atomic number of an atom is determined by the number of protons it has.

• TRUE

• FALSE

The subatomic particle with a negative charge is the.......

• electrons

• neutrons

• protons

• nucleus

The subatomic particle with a neutral charge is the...

• electrons

• neutrons

• protons

• electron cloud

The subatomic particle with a positive charge is the...

• electrons

• neutrons

• protons