100+ Free ILTS Science: Chemistry (240) Practice Questions

Science Process Skills (Subarea I)

The history and development of science and the nature of science, the scientific method and inquiry, experimental design including independent, dependent, and controlled variables, laboratory safety and the use of equipment such as burets and fume hoods, measurement, significant figures, SI units, dimensional analysis, data analysis and graphing, and science pedagogy.

Disciplinary Core Ideas (Subarea II)

Core ideas across chemistry, physics, biology, Earth and space science, astronomy, and environmental science, including the composition and states of matter, gas laws, atoms and molecules, fundamental forces and energy, cellular processes, genetics and evolution, geological and meteorological processes, oceanography, the origin of the universe, and contemporary environmental issues.

Structure and Properties of Matter (Subarea III)

Atomic theory and historical models, subatomic particles and isotopes, electron configuration and the Bohr model, periodic trends such as atomic radius and electronegativity, ionic, covalent, and metallic bonding, intermolecular forces and molecular geometry, nuclear processes, organic functional groups, solutions and molarity, acids and bases, the pH scale, and titration.

Chemical Reactions and Processes (Subarea IV)

Balancing chemical equations, the conservation of mass and charge, evidence of physical and chemical changes, classifying reaction types, stoichiometry and mole ratios, reaction rate and collision theory, catalysis, enthalpy and the laws of thermodynamics, entropy, chemical equilibrium, and Le Chatelier's principle.