Which statement is correct?
A.
Air is a mixture of gaseous elements only.
B.
Alloys are formed when a metal is ionically bonded to other elements.
C.
Carbon dioxide is a mixture of carbon and oxygen.
D.
Potassium bromide is an ionic compound.
Exam No：0620_s24_qp_12 Year：2024 Question No：3
Answer:
D
Knowledge points:
2.1.1. Describe the differences between elements, compounds and mixtures
Solution:
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