Grade 10 Physical Sciences | Fun Learning Quest for Kids

You're designing a new aluminium alloy for a lightweight bicycle frame. To predict how the atoms will bond, you must understand the electron configuration of aluminium. Which sublevel is being filled last when you write the electron configuration for a neutral aluminium atom (atomic number 13)?

You're analysing the periodic table to find an element that forms a stable ion with a 2- charge, similar to oxygen but in a different period. Which group should you look at, and why does that group tend to gain two electrons?

During a chemistry practical, you need to explain why sodium chloride (NaCl) is a solid at room temperature while carbon tetrachloride (CCl₄) is a liquid. What is the primary reason based on bonding and structure?