June 2015 Chemistry Regents #16-20
Highlight to reveal answers and explanations
| |||
Questions | Answer | Links | Explanations |
| 16. Which group 16 element combines with hydrogen to form a compound that has the strongest hydrogen bonding between its molecules? (1) oxygen (3) sulfur (2) selenium (4) tellurium | 1 | Link | H-bonding H with F,O or N |
| 17. Hydrocarbons are composed of the elements (1) carbon and hydrogen, only (2) carbon and oxygen, only (3) carbon, hydrogen and oxygen (4) carbon, nitrogen and oxygen | 1 | Link | Definition- only Hydrogen and carbon |
| 18. Which atom is bonded to the carbon atom in the functional group of a ketone? (1) fluorine (3) nitrogen (2) hydrogen (4) oxygen | 4 | Link | Table R |
| |||
| 19. Two types of organic reactions are (1) addition and sublimation (2) deposition and saponification (3) decomposition and evaporation (4) esterification and polymerization | 4 | Link | esterification and polymerization just had to know it |
| 20. The isomers butane and methylpropane have (1) the same molecular formula and the same properties (2) the same molecular formula and different properties (3) a different molecular formula and the same properties (4) a different molecular formula and different properties | 2 | Link | different structures= different properties |
| |||