Chemistry plays an essential role in helping society achieve the Sustainable Development ... circular economy by enabling the circular economy in downstream industries and recycling and reusing ...

dip a clean wire loop into a solid sample of the compound being tested put the loop into the edge of the blue flame from a Bunsen burner observe and record the flame ...

Hold a burr seed pod in your hand and feel its texture with your fingers. Then use a magnifier to look closely at the seed pod. Use a magnifier to look at both sides of the hook-and-loop tape. Press ...