Answer:
D.the wavelength of a wave is the distance between two successive peaks or two successive troughs or a peak and trough
Scientific methods are used to study living things or investigate questions and solve problems.
Explanation:
magnetic separation is used for the iron fillings and sodium chloride
The iron fillings will stick to the magnet
then evaporation can help to remove water
Answer:
Group 8A
Explanation:
This is because the elements in Group 8A is stable, what I mean is this elements have the maximum number of electrons in there last orbit so they dont need to form any compund with any other element in the periodic table.
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