Gawain sa Pagkatuto Bilang 6: Ang mga bagay ay nagbabago ang pisikal na anyo dahil sa init at lamig ng temperature, gamit
ang limang uri ng pisikal na pagbabago ng solid, liquid at gas,
magtala ng mga gawaing bahay na nakikitaan ng ganitong mga
pagbabago. Gawin ito sa iyong sagutang papel.
Melting
Solid Liquid
Freezing
Liquid
Solid
Evaporation
Liquid Gas
Condensation
Gas Liquid
Sublimation
Solid
Gas

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6