★ Key Scientific Tables & Anatomical Diagrams Extracted from Official Curricula

🔬 Figure 1 - Electronic Configuration of Metals and Non-Metals

Scientific details and precise observational breakdown:

• [A] Mark (/) or (x), with correction:
• (1) The impact of the acid rains increases in the industrial cities. ( )
• (2) When hydrangea plant grows in acidic soil, it develops blue flowers. ( )
• (B)(1)Whataretheresultsof. 0 ss—s—“—sSsSSSSS
• 1- Exposing a blue litmus strip wet with water to a test tube containing Cl, gas. E“"
• (2) The melting points of the elements (X) and (Y)
• are respectively 115.2°C, 660°C
• Answer the following :
• 1- What is the type of each of them?

🔬 Figure 2 - Ionic vs Covalent Bond Electron Sharing Models

Scientific details and precise observational breakdown:

• 0: Marks |
• [A) Correct the underlined parts: —.
• (1) The chemical energy stored in the car fuel is biological energy stored in
• the chemical bonds, which converts into kinetic energy during reactions.
• the kinetic energy of a similar box but full of fruits. — )
• (B} (1) What is the meaning of:
• 1- The displacement of an object equals 30 m

📊 Table 1 - Chemical Valencies and Polyatomic Groups Chart