12th Class Chemistry: Chemical Reactions and Periodic Table Quiz

An exothermic reaction releases heat energy to the surroundings, while an endothermic reaction absorbs heat energy from the surroundings.

The three main types of chemical reactions are synthesis, decomposition, and combustion.

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced chemical equation.

<p>The periodic table organizes elements based on their atomic number, electron configuration, and chemical properties, providing a foundation for understanding the behavior of elements and their compounds.</p> Signup and view all the answers

<p>It organizes elements based on their properties and provides valuable information about their behavior and reactivity.</p> Signup and view all the answers

<p>Exothermic reactions release heat energy to the surroundings, while endothermic reactions absorb heat energy from the surroundings.</p> Signup and view all the answers

<p>Stoichiometry is the calculation of reactants and products in chemical reactions and is important for determining the amount of substances involved in a reaction.</p> Signup and view all the answers

<p>The three main types of chemical reactions are synthesis, decomposition, and combustion. Synthesis combines two or more substances to form a new compound, decomposition breaks down a compound into simpler substances, and combustion involves a reaction with oxygen, often producing heat and light.</p> Signup and view all the answers