Chemistry Archive - tec-science

Classification of matter

This article provides answers to the following questions, among others:

This article provides answers to the following questions, among others:

How is a substance constructed at the atomic level?
What is a molecule?
What is meant by a particle?
What does an atomic nucleus consist of?
Why do not the protons in the nucleus repel each other, causing the nucleus to fall apart?
What is an electron shell?
What distinguishes a chemical element at the atomic level?
What are isotopes?
What is an ion?

This article provides answers to the following questions, among others:

How are the elements arranged in the periodic table?
What are the periods in the periodic table?
Why does the size of atoms increase from top to bottom but decrease from left to right?
Which atomic orbitals are occupied by electrons for each element?
In which subgroups are the main group elements divided?
What are transition metals?
What is meant by a metalloid?
Which elements are metalloids?
How many know elements are metals?
What is the meaning of the main group number?

This article provides answers to the following questions, among others:

This article provides answers to the following questions, among others:

What is meant by a shell?
What is a postulate?
What distinguishes the ground state of an atom?
How can an atom absorb or emit energy?
How much energy does it take to stimulate an atom?
What happens to the “excess” of energy when an excited atom returns to its ground state?
What is a quantum leap?
How many electrons have maximum space on a particular shell?
What is meant by a valence electron or a valence shell?
To what question can Bohr’s model give no answer?

This article provides answers to the following questions, among others:

This article provides answers to the following questions, among others:

Why do atoms enter into chemical bonds with other atoms?
What distinguishes the noble gas configuration?
What is meant by the octet rule?
In which different ways can atoms reach the noble gas configuration?
Why must not the noble gas configuration be equated with a fully occupied shell in Bohr’s atomic model?

This article provides answers to the following questions, among others:

This article provides answers to the following questions, among others:

How is the noble gas configuration achieved by an ionic bonding?
Between which types of elements does ionic bonding occur mainly?
For which materials does the ionic bond have special significance?
What is generally meant by the term salt?
Which property of an element is characterized by the electronegativity?
Which characteristic is shown in the periodic table regarding the electronegativity?
How can one infer the ionic bonding character of two elements?

This article provides answers to the following questions, among others: