A, the equation of sodium:

1. Sodium reacts with water to generate sodium hydroxide and hydrogen: 2na+2h2o → 2nNaOH+H2 =

2. Sodium reacts with chlorine to produce sodium chloride: 2na+Cl2 → 2nac.

3. Sodium reacts with sulfur to produce sodium sulfide: Na+S→Na2S.

4. Sodium reacts with oxygen to generate sodium oxide: 4Na+O2→2Na2O.

5. Sodium reacts with oxygen and water vapor to generate sodium hydroxide and sodium hydroxide: 2na+2h2o+O2 → 2nNaOH+H2O2.

Second, some basic knowledge about sodium:

1. Atomic structure: the atomic number of sodium is 1 1, and there are1/protons and neutrons in the nucleus. Electrons are distributed in three energy levels, and there is one electron in the outermost energy level.

2. Chemical properties: Sodium is an active metal, which reacts with oxygen in the air at room temperature to generate sodium oxide. When sodium reacts with water, it will react violently to produce hydrogen and sodium hydroxide. Sodium can also react with chlorine to produce sodium chloride.

3. Physical properties: Sodium is a silvery white metal, which is solid at room temperature. It is denser than water and can float on water, but it will soon dissolve in water.

4. Uses: Sodium can be used to make sodium lamps and batteries. In addition, sodium can also be used in alchemy and some laboratory experiments.

Third, some memory points about sodium:

1, the atomic number of sodium is 1 1, and the element symbol is Na, which belongs to the 1 family in the third period.

2. Sodium is a silvery white metal with good ductility, electrical conductivity and plasticity.

3. The density of sodium is very small, but its melting point is very low, so it is easy to melt.

4. The reaction of sodium with water will produce hydrogen and sodium hydroxide, which will give off heat violently, and there is a danger of explosion.

5. The valence of sodium is usually+1, which can form oxides, hydroxides, salts and other compounds with other elements.

6. Sodium is widely used in life, such as making sodium lamp and soap.

Methods of learning chemistry

1. Understand the basic concepts and principles of chemistry: Chemistry is a basic subject, so it is necessary to master the basic concepts and principles. Therefore, to learn chemistry, we must first understand the basic concepts and principles, such as molecules, atoms, elements, compounds and so on.

2, experimental operation and observation: learning chemistry needs to do more experiments, through experimental operation and observation, to understand the nature and law of chemical reactions. At the same time, experiment is also the basis of chemistry, and only through experiments can we deeply understand the knowledge of chemical Xiang Yan.

3. Summary: Learning chemistry needs to summarize knowledge points and form a knowledge system. It can be summarized by sorting out notes and making mind maps.