أرشيف الوسم : theory

The scientific method:  To understand a given phenomenon. Steps in scientific method 1- Making observation Qualitative : no numbers Example: The sky is blue and water is liquid Quantitative (called measurement): number+ unit Example: Water boils at 100 °C 2- Formulating hypothesis Hypothesis is a possible explanation for an observation 3- Performing experiments to test hypothesis: To gather new information …

kinetic molecular theory 1 – The particles are so small compared with the distances between them that the volume of the individual particles can be assumed to be negligible (zero). 2  – The particles are in constant motion. The collisions of the particles with the walls of the container are the cause of the pressure exerted by the gas. 3 …

ملخص الفصل الأول أساسيات الكيمياء للعالم زومدال Chapter 1 chemistry foundation Notes Zumdahl، إذا كنت تبحث عن باقي الفصول فالرجاء الضغط على الروابط الآتية : إذا كنت تبحث عن باقي الفصول فالرجاء الضغط على الروابط الآتية : الفصل الثاني  :ملخص الفصل الثاني :الذرات و الجزيئات و الأيونات من كتاب الكيمياء للعالم زومدال Chapter 2 notes: Atoms , molecules and ions …

Dalton’s Model of the atom. It is the basis of our understanding of the nature of matter. The following four statements comprise Dalton’s Model: a –  All matter is made up of extremely tiny. particles. called atoms. b-  Atoms are indivisible. c – Atoms of the same element are alike. d –  Atoms of different elements are different. e – …