Periodic Table

The modern periodic table is sorted by atomic number

• True

• False

What tells the number of protons in an atom?

• Mass number

• Atomic mass

• Atomic number

• Number of electrons

Which element has the chemical properties most similar to fluorine?

• Lithium

• Hydrogen

• Chlorine

• Aluminum

Vertical columns of the periodic table

• Groups

• Periods

• Atomic number

• Protons

Horizontal rows of the periodic table

• Periods

• Hydrogens

• Atoms

• Groups

What type of elements can stretch into wires?

• Non-metals

• Halogens

• Metalloids

• Metals

What is the mass number for this element?

• 26.98

• 26.98 - 13 = 13.98

• 13

• 39.98

The periodic table is primarily composed of

• Metals

• Metalloids

• Non-metals

• Gases

The group of elements that are colorless, odorless, and extremely unreactive are known as

• Alkali metals

• Chalcogens

• Noble gases

• Halogens

Which subatomic particles are located in the atom's nucleus?

• Protons, neutrons, and electrons

• Protons only

• Neutrons and electrons

• Protons and neutrons