Which of the above pictures (A-H) represents atom of an element? 2, Which of the above pictures represents molecules of an element? 3, Which picture displays a mixture of atoms? 4. picture displays a mixture of atoms and compounds? 5. Which picture displays molecules of a compound? 6. EXTENSION: which picture shows atoms of an element which is a solid?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.