Questions

October 2022 2 7 Report
11. Which of the following is a compound? A. Alloy
B. Gold
C. Iron
D. Silver
12. Which of the following is an element? A. Oxygen
B. Gun powder
C. Salt
D. Water
Tell whether the given substance is element or compound. Write 1 for element and 2 for compound.
_______13. Calcium Carbonate
_______14. Nickel
_______15. Nitrogen​

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