4. . Which is NOT TRUE about the Law of Conservation of mass? O The number of atoms before and after the reaction is equal. O Mass is neither created nor destroyed in a chemical reaction. O The total mass of the product of the reaction is less than the reactants The product of the reaction is different from the reactants but, the mass is same. 5. What is the type of chemical reaction, H2O (1) + MgO (s) → Mg(OH) (s) O Combination
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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