Questions
Q10 Changes in attractive forces when water vaporizes
Which of the following descr...
Chemistry, 21.09.2021 19:40 pulverjonathan1
Questions
Q10 Changes in attractive forces when water vaporizes
Which of the following describes the changes in forces of attraction that occur as H20 changes phase from a liquid to a vapor?
(A
H-O bonds break as H-Hand O- bonds form.
B
Hydrogen bonds between H20 molecules are broken.
C
Covalent bonds between H20 molecules are broken.
D
Ionic bonds between Htions and OH" ions are broken.
(E
Covalent bonds between H ions and H20 molecules become more effective.
Answers: 1
Chemistry, 21.06.2019 12:30
Which statement best describes how atoms combine to form sodium chloride (nacl)? a. a positively charged sodium ion and a positively charged chlorine ion form an covalent bond. b. a positively charged sodium ion and a negatively charged chlorine ion form an covalent bond. c. a positively charged sodium ion and a positively charged chlorine ion form an ionic bond. d. a positively charged sodium ion and a negatively charged chlorine ion form an ionic bond.
Answers: 1
Chemistry, 22.06.2019 01:00
Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.
Answers: 2
Chemistry, 22.06.2019 06:30
Three cards with holes are arranged in a straight line. a light is shined through the first cardβs hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
Answers: 1
Chemistry, 22.06.2019 06:40
Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine
Answers: 1
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