16. applying heat to the materials can cause
a. changes in material both physical and chemical
b. changes materials chemical only
c. changes materials physically only
d. no changes in the materials
17. iron forms _______________ when its components reacts with oxygen in the air.
a. rust b. fire c. hydrogen d. ash
a. changes in material both physical and chemical
b. changes materials chemical only
c. changes materials physically only
d. no changes in the materials
17. iron forms _______________ when its components reacts with oxygen in the air.
a. rust b. fire c. hydrogen d. ash
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Answer:
16.C
17.A
Explanation:
ayan na po
Sana po makatulong