Explain in your own words how telescopes are valuable tools for seeing the full range of the electromagnetic spectrum. Use evidence and details from the text in your answer.

Article link: sciencelearn. org. nz/resources/1625-light-and-telesco pes

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

Why does ammonia, nh3, behave as a base when it reacts with an acid? z