Which of the following is true of water It is a phospholipid It is.pdf
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The document consists of multiple-choice questions related to chemistry, covering concepts such as the properties of water, types of mixtures like colloids, the definitions of molecules and compounds, and types of chemical bonds. It also includes information about amino acids used by the human body and the characteristics of polar molecules. Key points include the nature of water as a polar molecule and the separation of blood components in a colloid under centrifugal force.
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Which of the following is true of water It is a phospholipid It is.pdf
- 1. Which of the following is true of water? It is a phospholipid It is polar It binds tightly to fats All the above Which of the following would be a colloid? Blood Muddy river water Jello Salt water Which of the following is a molecule, but not a compound? O_3 CO_2 H_2O C_6 H_12 O_6 which type of chemical bond causes a permanent transfer of electrons? Hydrogen bond Covalent bond Ionic bond James Bond Why do fats and water not mix well? Water is non-polar, fat is polar Water is polar, fat is non-polar Both water and fat are polar and repel each other Both water and fat are non-polar and repel each other Any chemical reaction that make larger molecules out of smaller things is called a ________ Equilibrium reaction Stable reaction Creation reaction Synthesis reaction 46. How many different amino acids are used by the human body? 12 20 32 128 Solution 40. b Water (H2O) is an example of a polar molecule since it has a slight positive charge on one side (hydrogen side) and a slight negative charge on the other (oxygen side). 41. a Blood in its normal in suspension, which is a colloid. When applying of centrifugal force externally, blood separates into its separate components just as a suspension does. 42. a Smallest fundamental unit of a chemical compound that can take part in a chemical reaction. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. 43. c Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. 44. b 45. d