Cem 141 chapter 1 - Study guides, Class notes & Summaries

CEM 141 CHAPTER 1 LEARNING OBJECTIVES WITH COMPLETE SOLUTIONS Stable systems form when? The attractive forces and the repulsive forces are equal. Claim, evidence and reasoning for the existence of negatively charged particles in an atom. Claim: Electron's are negatively charged particles of an atom. Evidence: JJ's cathode ray. Electron's were ejected from the cathode, regardless of what the cathode was made of. Reasoning: Electrons must be negatively charged because they acceler...

Stable systems form when? - The attractive forces and the repulsive forces are equal. Claim, evidence and reasoning for the existence of negatively charged particles in an atom. - Claim: Electron's are negatively charged particles of an atom. Evidence: JJ's cathode ray. Electron's were ejected from the cathode, regardless of what the cathode was made of. Reasoning: Electrons must be negatively charged because they accelerate towards the anode. Claim, evidence and reasoning for the exist...

CEM 141 Chapter 1 Atoms Questions And Answers Rated A+ New Update Assured Satisfaction

Identify and explain the similarities and differences between atoms, molecules, elements, and compounds - Atoms: the smallest unit of ordinary matter that forms a chemical element Molecules: electrically neutral group of two or more atoms held together by chemical bonds. Elements: consists only of the same atoms, with the same number of protons Compounds: a chemical substance composed of atoms from 2+ elements held together by chemical bonds Make an argument(claim, evidence, reasoning) for...

CEM 141 Chapter 1 Questions And Answers Rated A+ New Update Assured Satisfaction

CEM 141 Chapter 1 Learning Objectives Questions And Answers Rated A+ New Update Assured Satisfaction

CEM 141 Chapter 1 (1).

Matter -️️- Made up of atoms Atoms -️️- Smallest distinguishable part of an element. We use models (mental and physical) -️️to represent many chemical entities We use different models -️️for different purposes Theories (such as atomic theory) -️️change over time according to the evidence available. All atoms and molecules attract each other -️️because of the attractive electrical forces between them Attractions -️️lower the potential energy of the system

CEM 141 Chapter 1 Learning Objectives (1)

Identify and explain the similarities and differences between atoms, molecules, elements, and compounds - Atoms: the smallest unit of ordinary matter that forms a chemical element Molecules: electrically neutral group of two or more atoms held together by chemical bonds. Elements: consists only of the same atoms, with the same number of protons Compounds: a chemical substance composed of atoms from 2+ elements held together by chemical bonds Make an argument(claim, evidence, reasoning) for...