An atom is the smallest unit of matter that retains the chemical properties of an element. It consists of a nucleus, which contains positively charged protons and neutral neutrons, and negatively charged electrons orbiting around the nucleus.


The atomic structure is the arrangement of the subatomic particles within an atom. The protons and neutrons are located in the nucleus, while the electrons are located in orbitals around the nucleus.


Electron configuration refers to the arrangement of electrons in the orbitals of an atom. The electrons occupy the orbitals in order of increasing energy levels.


The atomic number of an element is the number of protons in its nucleus. The mass number is the sum of the number of protons and neutrons in the nucleus.


Isotopes are atoms of the same element that have the same atomic number but different mass numbers. This is due to the difference in the number of neutrons in the nucleus.


Ions are atoms that have gained or lost electrons, resulting in a net positive or negative charge, respectively.




Matter is anything that has mass and occupies space. It can exist in three states: solid, liquid, and gas.


Elements are pure substances made up of only one type of atom. Compounds are made up of two or more different types of atoms that are chemically bonded together.


Chemical reactions involve the breaking and forming of chemical bonds between atoms. The reactants are the starting materials, while the products are the substances formed as a result of the reaction.


Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction. It involves the use of balanced chemical equations to determine the amount of reactants and products involved in the reaction.


Acids are substances that release hydrogen ions (H+) in solution, while bases are substances that release hydroxide ions (OH-) in solution. The pH scale is used to measure the acidity or basicity of a solution.


The three states of matter are solid, liquid, and gas. The state of matter depends on the temperature and pressure of the substance.

Overall, understanding the structure of atoms and the basic concepts of chemistry is essential for understanding the behavior of matter and chemical reactions.

So u r reading to midterm
Some basic concept of chemistry
try to crack the mole concept
C to F
In structure of atom
quantum
mainly Bohr's model and theory
equations like Heisenberg and soon
photo electric effect Rutherford etc