Because of the crystal structure of the ice, ice has lower density than liquid water. So the volume of the ice of same mass is greater than water. When melting, the volume will decrease.
Answer: Because Alkalis are bases that can dissolve in water, which can also neutralize acid.
A) Using paper chromatography to separate pigments by density
Gold is one of the softest metals. So YES
<span>2 Na + CaF</span>₂<span> = 2 NaF + Ca
is an example of a </span>single- replacement
answer D
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