أرشيف الوسم : ionic

ملخص الفصل الرابع :أنواع التفاعلات الكيميائية و العلاقات الكمية للمحاليل من كتاب الكيمياء للعالم زومدال Chapter 4 notes: Types of Chemical Reactions and Solution Stoichiometry , Chemistry Zumdahl إذا كنت تبحث عن باقي الفصول فالرجاء الضغط على الروابط الآتية : الفصل الأول : ملخص الفصل الأول :أساسيات الكيمياء للعالم زومدال Chapter 1 chemistry foundation Notes Zumdahl AP الفصل الثاني  :ملخص الفصل …

Chemical bond: The attractive force which holds together the constituent atoms of chemical compounds is called chemical bond. Combination of atoms: It. is universal law of nature that systems with lower energy are more stable. So atoms combine to form a molecule because it has a· lower energy i.e., more stable. Modern concept of chemical bonding: The formation -of a …

Chemical nomenclature is the system of names that chemists use to identify compounds precisely. The systematic method of naming compounds is vital to the study of chemistry, because when a new substance is formulated, it must be named in order to distinguish it from all other substances. Using this systematic method of naming compounds, the positive part is named and …

There are two types of compounds: molecular and ionic compounds. For molecular compounds, a molecular formula represents the number and kinds of atoms in the molecule. The molecular formula also tells us the lowest whole number ratio between the atoms in the compound. For example, water is represented by the formula H2O. This formula indicates that in every water molecule, there …

Compounds Compounds are pure substances that differ from elements because they contain more than one kind of atom. The Law of Definite Composition (or the Law of Definite Proportions) applies to compounds. For example, sodium chloride contains one atom of sodium for each atom of chlorine. Water contains two atoms of hydrogen for each atom of oxygen. It is known …