Question

11. Which of the following is substance 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
For items 13-15, tell whether it is an example of an element or a compound. Write the
word ELEMENT if the sample shows characteristics of an element and COMPOUND if it
shows characteristics of compound.
13. Calcium Carbonate
14. Nickel
15. Nitrogen
Additional Activities​

Answer 1

Answer:

11.None of these because gold iron and silver are elements while alloy is considered to be a mixture because it shows the properties of its constituents

12. Oxygen

13. Compound

14. Element

15. Element

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