Eng Exam 2023 with 100% complete solutions

Snowflakes form from tiny water droplets, following a specific process of chemical bonding as they freeze, which results in a six-sided figure. correct answersA. No change The rare "triangular" snowflake, similarly, confounded scientists for years because it apparently defied the basic laws of chemistry. correct answersJ. however, The seemingly triangular shape of those snowflakes suggests that forming through a different process of chemical bonding. correct answersD. that they form By re-creating snowflake formation, a discovery has revealed to scientists Kenneth Libbrecht and Hannah Arnold the cause of this apparent variation. correct answersH. scientists Kenneth Libbrecht and Hannah Arnold have discovered the cause of this apparent variation. Snowflakes begin to form when water in the atmosphere freezes it causes the water molecules to bond into a hexagonal shape. correct answersB. freezes, causing During the flake's descent from Earth's upper atmosphere, other water vapor molecules bumps into the hexagonal structure. correct answersJ. bump In 2009, Libbrecht and Arnold's experiments revealed that triangular snowflakes begin with the same process of chemical bonding and forms a hexagonal shape. correct answersJ. form The triangular shape is an illusion resulting from one significant addition to the process dust. correct answersC. process: Triangular snowflakes begin to form when a tiny dust particle or other such impurity collides with the flake as it falls, thereby pushing one edge upward. The greater the pressure from the wind, causes bonds to form quick at this edge than in the rest of the snowflake. correct answersJ. pressure from the wind