True or False: The colour of elements turn lighter going down Group VII in the Periodic Table
False, the colour will turn darker as we go down group 7!
Shabul fills the balloon with helium to surprise Sodul for his birthday! Why does Shabul use helium instead of hydrogen?
Helium is a noble/stable gas. Using hydrogen may cause explosion!
Rehana reacts lithium with water. If she dips a litmus paper in the reaction solution, what will she observe?
She will observe colour change to blue! The reaction produces lithium hydroxide, an alkali. Do you know the other byproduct?
Subtance X is commonly used as a catalyst to make butter and has melting point of 1455 °C. Can you guess which group in periodic table it belongs?
The transition metal! It has high melting point & is a good catalyst! X is nickel actually :)
Based on the periodic table given, which of the TWO elements share similar chemical properties?
W & Y! They are both from the same group, hence share similar chemical properties.
Based on the periodic table given, which letter represent metal with lowest melting point?
A, Group 1 metal has lower melting point generally compared to the metals in the transition metal.
