Answer: D. Made of only one kind of atom
Explanation:A compound forms whenever two or more atoms form chemical bonds with each other.
Charge of nucleus is always positive whether it is element or isotope.
Answer:
D
Explanation:
filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles.
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Can I have brain pls
Answer:
oxygen is an element because it is a pure substance which cannot be split into simpler substances by chemical means
