Chemistry: Exercises Generator app generates random exercises for a selected subject, providing a result and full solution steps for each of them. It also contains a short introduction (tutorial) into each matter. Chemistry problems at the level of science classes at high school and college.

Result and solution are initially hidden. Try to solve a problem yourself and check correctness.

Use Chemistry: Exercises Generator application before a test or exam or when you have troubles in solving chemistry exercises. Compare solutions yourself instead of paying a tutor.

Activate Premium to choose exercise level, disable ads and let the app solve your exercises.

If you are a teacher you can use the application to quickly prepare a homework or test questions for your students.

Every month there is an app update with new chemistry problems and subjects. Currently available categories are:

- atoms and molecules,

- fundamentals of stoichiometry,

- chemical reactions,

- solutions,

- hydrates,

- electrochemistry,

- electron configuration,

- radioactivity,

Chemistry is a fundamental science that delves into the composition, structure, properties, and transformations of matter. It encompasses a vast spectrum of topics, ranging from the microscopic interactions of atoms and molecules to the macroscopic phenomena observed in chemical reactions.

Atomic Structure and Bonding

At the core of chemistry lies the understanding of atomic structure. Atoms consist of a positively charged nucleus surrounded by negatively charged electrons. The number of protons in the nucleus determines the element's atomic number and its chemical identity. The arrangement of electrons in different energy levels dictates the chemical properties of the element.

Atoms interact with each other through chemical bonds, which are the forces that hold atoms together to form molecules and compounds. Covalent bonds, formed by the sharing of electron pairs, are the most common type of bond. Ionic bonds, on the other hand, involve the transfer of electrons between atoms, resulting in the formation of charged ions.

Chemical Reactions

Chemical reactions are processes in which substances undergo changes in their chemical composition. These reactions can be classified into various types, including synthesis, decomposition, single displacement, double displacement, and combustion reactions. The rate of a chemical reaction depends on factors such as temperature, concentration, and the presence of a catalyst.

Stoichiometry

Stoichiometry is a branch of chemistry that deals with the quantitative relationships between reactants and products in chemical reactions. It involves balancing chemical equations to ensure that the number of atoms of each element is conserved on both sides of the equation. Stoichiometry is essential for predicting the amounts of reactants and products involved in a reaction.

Thermochemistry

Thermochemistry focuses on the energy changes associated with chemical reactions. Exothermic reactions release energy in the form of heat, while endothermic reactions require an input of energy to occur. The enthalpy change of a reaction is a measure of the energy change that occurs during the reaction.

Chemical Equilibrium

Chemical equilibrium is a state in which the concentrations of reactants and products remain constant over time. In equilibrium, the forward and reverse reactions occur at the same rate. The equilibrium constant is a measure of the extent to which a reaction proceeds towards completion.

Acids, Bases, and pH

Acids are substances that donate protons (H+ ions), while bases are substances that accept protons. The pH of a solution is a measure of its acidity or alkalinity, with a pH of 7 being neutral. The pH scale ranges from 0 to 14, with lower values indicating acidity and higher values indicating alkalinity.

Organic Chemistry

Organic chemistry is the study of compounds that contain carbon. Carbon has the unique ability to form covalent bonds with itself and other elements, giving rise to a vast array of organic molecules. Organic compounds are essential for life and play a crucial role in biological processes.

Inorganic Chemistry

Inorganic chemistry deals with the study of compounds that do not contain carbon. These compounds include salts, metals, and minerals. Inorganic chemistry is essential for understanding the behavior of elements and their interactions in the environment.

Applications of Chemistry

Chemistry has numerous applications in various fields, including medicine, agriculture, industry, and materials science. Chemical knowledge is vital for developing new drugs, fertilizers, materials, and technologies that improve our lives.

In summary, chemistry is a multifaceted science that provides a deep understanding of the composition, structure, properties, and transformations of matter. It encompasses a wide range of topics, from atomic structure to chemical reactions, stoichiometry, thermochemistry, chemical equilibrium, acids, bases, and pH, organic chemistry, and inorganic chemistry. The applications of chemistry are vast, touching upon almost every aspect of modern life.