Answer the following question given this paragraph: Electromagnetic waves that are commonly called light fall roughly in the middle of the electromagnetic spectrum. Light includes infrared light, visible light, and ultraviolet light. Q: What are 3 types of light? Choices: - complementary, incandescent, fluorescent - diffuse, ambient, opaque - solar , visible , ultraviolet - infrared, visible, ultraviolet A:
infrared, visible, ultraviolet
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Answer the following question given this paragraph: Anions form when an atom gains electrons. Nonmetallic atoms typically gain enough electrons to obtain the same electron configuration as the nearest noble gas. All the elements in Group 17 have seven valence electrons, which are arranged into an outer configuration of n s 2 n p 5 . To achieve a noble gas configuration ( n s 2 n p 6 ), each of these elements needs to gain just one electron, resulting in an anion with a 1 charge. Similarly, Group 16 elements can obtain an n s 2 n p 6 valence configuration by forming ions with a 2 charge, and the Group 15 nonmetals will form ions with a 3 charge. Naming anions is slightly different than naming cations. The end of the element's name is dropped and replaced with the ide suffix. For example, when the chlorine atom (Cl) gains one electron, it becomes the chloride ion (Cl - ). This structure has the same electron configuration as the noble gas argon. Similarly, sulfur can gain two electrons to become the sulfide ion (S 2- ), which also has a noble gas configuration. Q: What forms when an atom gains electrons? Choices: - cations - bonds - crystals - anions A:
anions
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Answer the following question given this paragraph: Stems hold plants upright, bear leaves and other structures, and transport fluids between roots and leaves. Q: What basic structure holds plants upright, bears leaves and other structures, and transports fluids between roots and leaves? Choices: - branches - flowers - leaves - stem A:
stem
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Answer the following question given this paragraph: An unconformity is a gap in rock layers. They occur where older rock layers eroded away completely before new rock layers were deposited. Q: What is a gap in rock layers called? Choices: - a crevice - a mutation - an anomaly - an unconformity A:
an unconformity
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