Periodic Table, Bohr Models, Lewis Dot Structures

Front

What is the arrangement of elements in the periodic table?

Back

Elements are arranged in increasing atomic number from left to right.

Front

What do all elements in a group have in common?

Back

All elements in a group have the same number of valence electrons.

Front

What determines the chemical reactivity of an element?

Back

The chemical reactivity is determined by the valence electrons.

Front

What is a Bohr model?

Back

A Bohr model is a diagram that shows the arrangement of electrons in an atom, with energy levels represented as concentric circles.

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

What is the significance of group numbers in the periodic table?

Back

Group numbers indicate the number of valence electrons in the elements of that group.

Front

How are elements in the same period similar?

Back

Elements in the same period have the same number of energy levels.

Front

What is the atomic number?

Back

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

Front

What is the difference between atomic mass and atomic number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while atomic number is the number of protons in the nucleus.

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure is a diagram that represents the valence electrons of an atom as dots around the element's symbol.