Atoms and Molecules
Science Solutions from Chapter -1 - Atoms and Molecules
This chapter describes that the whole universe is made of atoms, which consist of neutrons, protons and electrons. Molecules are formed due to the bonding between two or more atoms.
Practice Other Topics from Atoms and Molecules
The topic describes the main five laws of chemical combination. It covers law of conservation of mass, definite proportions, multiple proportions, Gay Lussac's law of gaseous volumes and Avogadro's Law.
In this topic, the readers will learn what an atom is. It includes atomic radius of different elements. Modern day symbols of atoms of different elements are described visually. It also explains atomic mass.
The topic defines and explains the existence of the molecules. It highlights the constitution of molecules by the atoms. It defines atomicity of some metallic and non-metallic elements. It also covers the details of compounds.
In this topic, we will learn about ions, the charged species present in metals and non-metal compounds. We will study positively and negatively charged species. Some ionic compounds and their constituent elements are also enlisted in a tabular form.
In this topic, chemical formula of a compound is discussed. It briefs us on the names and symbols of some ions. We will learn how to write formula of a simple compound.
In this topic, we will discuss the concept of molecular mass, formula unit mass and mole concept. It also elaborates the formulas and calculations with solved examples. It also highlights on the relationship between mole, Avogadro number and mass.
