Ques:Q: What kind of bonds are forces of attraction between positive metal ions and the valence electrons that are constantly moving around them? Read this paragraph and choose the correct option from the provided answers: Metallic bonds are forces of attraction between positive metal ions and the valence electrons that are constantly moving around them (see the Figure below ). The valence electrons include their own and those of other, nearby ions of the same metal. The valence electrons of metals move freely in this way because metals have relatively low electronegativity, or attraction to electrons. The positive metal ions form a lattice-like structure held together by all the metallic bonds. For an animated version of metallic bonding, go to this URL:. Choices: - neutron bonds - liquid bonds - ionized bonds - metallic bonds A:

Ans:metallic bonds
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Ques:Q: What fuels provide most of the energy used worldwide? Read this paragraph and choose the correct option from the provided answers: Fossil fuels provide most of the energy used worldwide. Richer nations use far more energy resources, especially fossil fuels, than poorer nations do. There are several ways that people can conserve energy in their daily lives. Choices: - hydroelectric - solar - renewable - fossil A:

Ans:fossil
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Ques:Q: What do bees do for flowering plants? Read this paragraph and choose the correct option from the provided answers: Thomas Quine (Flickr:quinet). Bees are important pollinators of flowering plants . CC BY 2.0. Choices: - eat - create - feed - pollinate A:

Ans:pollinate
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Ques:Q: Because force and electric field are what, they have direction as well as their value? Read this paragraph and choose the correct option from the provided answers: Force and electric field are vectors and thus have direction as well as their value. Choices: - sensors - neurons - mass - vectors A:

Ans:
vectors
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