The Periodic Table, Isotopes and Atomic Structure Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

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

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number).

Front

What is the significance of the zig-zag line on the periodic table?

Back

The zig-zag line separates metals from non-metals, with metals on the left and non-metals on the right.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

Which family of elements is known for having 1 valence electron?

Back

The alkali metal family is known for having 1 valence electron.

Front

What is the Bohr model of the atom?

Back

The Bohr model depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits.

Front

What is the difference between O-16 and O-18?

Back

O-16 and O-18 are isotopes of oxygen that differ in the number of neutrons; O-16 has 8 neutrons, while O-18 has 10 neutrons.

Front

What are the properties of metals?

Back

Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.

Front

What family of elements has 7 valence electrons?

Back

The halogen family has 7 valence electrons.