The GED Science test's Physical Science portion accounts for 40% of the exam. This section is not about rote memorization of formulas and facts. Instead, it measures your ability to interpret and analyze data from experiments, graphs, and passages related to chemistry and physics.
Chemistry: This area focuses on the composition and properties of matter and how matter changes. You should be familiar with:
States of Matter: Solids, liquids, and gases, and how they change from one state to another.
Elements and Compounds: The basic structure of the atom, the periodic table, and how atoms combine to form molecules.
Chemical Reactions: The basics of chemical bonds and how to interpret simple chemical equations.
Solutions: The properties of acids and bases.
Physics: This section deals with energy and its interaction with matter. Key topics include:
Motion and Forces: Concepts like speed, acceleration, and gravity. You may be asked to interpret graphs showing distance and time.
Forms of Energy: Understanding different types of energy, such as kinetic, potential, electrical, and thermal energy, and how energy is transferred.
Waves: The properties of waves, including sound and light. You might analyze diagrams showing wave characteristics like frequency and wavelength.
Electricity: Basic concepts of circuits and the flow of electricity.
The questions in this section will often provide you with data from a hypothetical experiment and ask you to draw a conclusion, identify a variable, or predict an outcome
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