Isabel makes an open circuit using a cell, a bulb, and wires. she leaves the ends of two wires free as shown in the picture. she then tests a few objects for conduction by touching them with the ends of the free wires. which item will complete the circuit? a) rope b) screwdriver c) steel fork d) pencil

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl