Cem 141 chapter 3 exam - Study guides, Class notes & Summaries

CEM 141 Chapter 3 Test exam questions with correct answers with complete A+solution 2024/2025

Cem 141 Chapter 3 Origin of Atoms Exam Questions| Already answered| GRADED A+ in an infinitely dense moment 13.8 billion years ago, the Universe is born from a singularity. - ANSWER- The Big Bang Theory true - ANSWER-If thermal energy is spreading out it will eventually cool a mysterious particle/force accelerates the expansion. - ANSWER-Inflation after 380,00 years; loose electrons cool enough to combine with protons. The Universe becomes transparent to light. The microwave background b...

they have similar causes: electrostatic attraction of the electron of one atom to the nucleus of the other - ANSWER-Similarities between LDF and Covalent Bond 1. magnitude of attraction 2. how the electrons are arranged in the new species formed by the interaction - ANSWER-Differences between LDF and Covalent Bond because valence electrons are attracted to the nuclei of other atoms - ANSWER-Why do bonds form between atoms? 1. valence electrons from one atom become attracted to the nucleus...

rapid expansion of the universe -️️Big Bang how long after the Big Bang was air created? -️️few minutes how long after the Big Bang were leptons (quarks, electrons) created? -️️1 picosecond how long after the Big Bang were protons and neutrons created? -️️1 microsecond how did matter and stars begin to form? -️️in clumps