Ques:Q: What type of carbons may be gases, liquids, or solids at room temperature? Choices: - diamonds - amorphous - graphites - hydrocarbons A:

Ans:hydrocarbons
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Ques:Q: What is a combination of two or more substances in any proportions called? Choices: - Combination - structure - mix - mixture A:

Ans:mixture
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Ques:Q: Abnormally high activity or low activity of the parathyroid gland can cause disorders related to levels of what bone mineral? Choices: - potassium - collagen - magnesium - calcium A:

Ans:calcium
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Ques:Q: What is a copy of an image formed by reflection or refraction? Choices: - an example - a photographic image - a mirror image - an image A:

Ans:
an image
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