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848 Questions
24 of the chemical elements are essential to the human body. Four bulk elements, 7 are macrominerals and 13 are trace elements. Which are the four bulk elements
Medicine
2022-09-09
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The chemical elements can be divided into metal elements and non-metal elements. Which of the statements about metals and non-metals is correct
Medicine
2022-09-09
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Some atoms of potassium, K contain 19 protons and 20 neutrons in their nuclei. What is the correct symbol for these atoms
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2022-09-09
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In a water molecule, the bond between oxygen (O) and hydrogen (H) is
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2022-09-09
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Choose the ending that will correctly complete the sentence: When atoms of a metal element and atoms of a non-metal element react, the result is
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2022-09-09
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Given that the atomic mass of nitrogen is 14 and of hydrogen is 1, what is the mass in grams of one mole of ammonia (NH3)
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2022-09-09
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Choose the correct statement about hydrogen bonds. They
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2022-09-09
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One of the following is INCORRECT. Which one
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2022-09-09
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Many drugs are neutralised to form salts and administered in this form. What is the main advantage of administering the salt form of the drug? It is usually:
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2022-09-09
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A molecular compound may be defined by which of the following
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2022-09-09
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The chemical name for sodium is which of the following
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2022-09-09
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Which of the particles listed below is the smallest
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2022-09-09
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The chemical formula C6H12O6 contains much information. However, what information is NOT provided by the formula
Medicine
2022-09-09
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848
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