1.Which of the following is the simplest form of substance?
A.chemical formula c.element
b.compound d.mixture
2.which of the following substance is an element
a.iron b.salt c.water d.carbon dioxide
5.which of the following is NOT a group of elements
a.metalloid b.non metal c.hydrogen d.metal
Answers & Comments
Answer:
1.A
2.D
5.B
Explanation:
Yan na po aan amakatulong