Ques:Q: What are metals and good electrical conductors that tend to lose their valence electrons in chemical reactions called? Choices: - stable metals - conservants - precious metals - reductants A:

Ans:reductants
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Ques:Q: What are the two types of semiconductors? Choices: - n-type and m-type - o-type and p-type - a-type and b-type - n-type and p-type A:

Ans:n-type and p-type
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Ques:Q: What occurs when light interacts with our atmosphere? Choices: - prism effect - eclipse - rainbow formation - rayleigh scattering A:

Ans:rayleigh scattering
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Ques:Q: What process enables all living things to maintain a constant internal environment? Choices: - peristalsis - consciousness - ketosis - homeostasis A:

Ans:
homeostasis
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