I believe your answer is chemial
Metals such as iron, nickel and cobalt are detected by passive and active metal detectors. Other metals, such as copper, brass and aluminum, are detected only by active means.
Answer:
B
Explanation:
pure water can accumulate to form ice while pushing the salt particles to be accumulated in the liquid part, because salt particles are more favorable to stay in liquid than ice
so there can still be some salt in the ice between the bonds
