From your results, can you tell if these bacteria are ampicillin resistant by looking at them on the lb plate?

Yes

It is possible to tell if the bacteria on the lb plate are ampicillin resistant just by looking at it because of the presence of colonies. This would indicate that ampicillin has lost its ability to effectively control or kill bacterial growth for it continues to multiply despite the presence of therapeutic level of ampicillin. Moreover, bacteria become resistant by gene mutation and by acquiring resistance from another bacterium through the widespread misuse of antibiotic.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.