Question

practice it! in 1869, the russian chemist dmitri mendeleev developed a table showing the chemical elements known at the time. he claimed that this periodic table showed that there were undiscovered elements, and he made predictions about their properties. these elements were eventually discovered, and their properties closely matched mendeleevs predictions. select the statement that accurately categorizes this example as science or non - science. this example is science. it meets all six of the criteria in conptt, including being tentative. new evidence was found that changed the scientific understanding. this example is science. it meets most of the criteria in conptt. however, it does not show consistency. other scientists were unable to come to similar conclusions. this example is non - science. it does not meet the criteria of conptt. one scientist made predictions, but others were unable to prove them. this example is non - science. it meets all six of the criteria in conptt, including being tentative. new evidence was found that changed the scientific understanding.

Explanation:

Mendeleev's development of the periodic - table, prediction of undiscovered elements, and the subsequent confirmation of his predictions through discovery of elements with matching properties follow the scientific method. Science is tentative as new evidence can change understanding, and this example shows that. It also meets other scientific criteria like being based on evidence and making testable predictions.

Answer:

This example is science. It meets all six of the criteria in CONPTT, including being tentative. New evidence was found that changed the scientific understanding.