In the third year of junior high school, the knowledge points of chemistry are summarized, and the p

Solid color knowledge points.

1. Red solid: copper, iron oxide.

2. Green solid: basic copper carbonate.

3. Blue solid: copper hydroxide, copper sulfate crystals.

4. Purple-black solid: potassium permanganate.

5. Light yellow solid: sulfur.

6. Colorless solids: ice, dry ice, diamond.

7. Silver-white solid: silver, iron, magnesium, aluminum, mercury and other metals.

8. Black solid: iron powder, charcoal, copper oxide, manganese dioxide, ferric tetroxide, (carbon black, activated carbon).

9. Reddish-brown solid: iron hydroxide.

10. White solid: sodium chloride, sodium carbonate, sodium hydroxide, calcium hydroxide, calcium carbonate, calcium oxide, copper sulfate, phosphorus pentoxide, magnesium oxide.

Important knowledge points of junior high school chemistry.

1. The three major chemical processes in ancient China: papermaking, gunpowder, and porcelain.

2. Three types of oxidation reactions: combustion, slow oxidation.

3. The three kinds of particles that make up matter: molecules, atoms, and ions.

4. Three kinds of uncharged particles: molecules, atoms, and neutrons.

5. Three theories of material composition and composition:

1) Carbon dioxide is composed of carbon and oxygen;

2) Carbon dioxide is composed of carbon dioxide molecules;

3) A carbon dioxide molecule is made up of a carbon atom and an oxygen atom.

6. The three kinds of particles that make up atoms: protons, neutrons, and electrons.

7. Three causes of water pollution:

1) Arbitrary discharge of industrial "three wastes", 2) arbitrary discharge of domestic sewage.

3) Pesticides and fertilizers are applied arbitrarily.

You must memorize knowledge points in chemistry for the high school entrance examination.

1) The number of protons determines the number of charges carried by the nucleus (nuclear charge number).

Because the number of protons in the atom = the number of nuclear charges.

2) The number of protons determines the type of element.

3) The number of protons and neutrons determines the relative atomic mass of the atom.

Because the number of protons in the atom + the number of neutrons = the relative atomic mass of the atom.

4) The energy of the electron determines the distance between the electron motion region and the nucleus.

Because the closer to the nucleus the lower the energy of the electrons, the higher the energy the farther away.

5) The number of electrons in the outermost shell of an atom determines the class of elements.

Because the number of electrons in the outermost shell of the atom <4 is metallic, > or = 4 is non-metal, and =8 (= 2 when the first shell is the outermost shell) is a noble gaseous element.

6) The number of electrons in the outermost shell of an atom determines the chemical properties of the element.

1.Understand the concepts, theorems and basic chemical equations of acids and bases2Common experiments (e.g. laboratory-made carbon dioxide, etc.).

3. The chemical and physical properties and uses of non-metals, such as oxygen, carbon dioxide, etc. 4 Metal elements and common metal compounds, such as copper, iron oxide, etc. (these knowledge points can be found from the book, read the book from the table of contents, learn to summarize, and organize the knowledge in blocks!) Back then, I took the A+ in chemistry high school exam, come on! ）

Read the book well, really, you must read it very carefully, very useful... good luck to you!!