Design a method to separate a mixture of
sugar, sand, and bits of iron.

Magnet, water, coffee filter.

Explanation:

The magnet will pick up the iron filings, and the water will dissolve the sugar and leave the sand. Next add the sand to a coffee filter and squeeze the sugar-water liquid. You have now successfully separated each specimen.  

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explanation:

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.