Moles and Compounds The idea of the mole has not been only used with elements and atoms but also used with compounds. 1 mole of water H2O (left) and 1 mole of ethanol C2H5OH (right)…
Stoichiometry- Chemical Calculations: Relative Atomic Mass and Reacting…
Stoichiometry- Chemical Calculations Learning outcome: Relative Atomic Mass Reacting Mass Relative Atomic Mass At present we know there are 118 different elements know in the earth. The atoms of these elements differ in mass because…
Chemistry in Our Lives: Edible Salt, Baking Powder,…
Learning outcome: Edible salt, its preparation and uses. Baking soda/ powder, its preparation and uses. Vinegar, its preparation and role to preserve foods. A brief discussion on soft drinks. Household Chemistry we use different kinds…
States of Matter: Brownian motion
Brownian motion Evidence for the movement of particles in liquids came to light in 1827 when Robert Brown, a botanist, observed that fine pollen grains on the surface of the water were not stationary. 96…
States of Matter: The Kinetic Theory of Matter…
Freezing Freezing is a process when a substance changes from a liquid to a solid. The temperature at which a liquid becomes a solid is called its freezing point. Hence, heat energy is given out…
States of Matter: The Kinetic Theory of Matter…
Changes of states The kinetic theory model can be used to explain how a substance changes from one state to another. Reason for a substance to change its state In according to the kinetic particle…
States of Matter: The Kinetic Theory of Matter
The kinetic theory helps to explain the way in which matter behaves. The evidence is consistent with the idea that all matter is made up of tiny particles. The kinetic theory explains: The states of…
States of Matter: Definition of Solids, Liquids and…
The matter is such a physical entity that has mass and occupies space. This word is used to cover all the substances and materials from which the physical universe is composed. Usually, all matters can…