ASVAB General Science

ASVAB General Science covers essential scientific concepts and principles to prepare candidates for the Armed Services Vocational Aptitude Battery test.

Life Science BasicsEarth and Space SciencePhysical Science Fundamentals
Human Body SystemsChemical Reactions and EquationsForces, Motion, and Newton's Laws
Scientific Method in Everyday LifeEnvironmental Science and ConservationScience in Military Technology
Smart Guessing and EliminationMastering Science VocabularyTime Management for Science Questions
Life Science BasicsEarth and Space Scie...Physical Science Fun...Human Body SystemsChemical Reactions a...Forces, Motion, and ...Scientific Method in...Environmental Scienc...Science in Military ...Smart Guessing and E...Mastering Science Vo...Time Management for ...
Advanced Topics

Chemical Reactions and Equations

How Substances Change

Chemical reactions occur when substances interact to form new substances. These changes are represented by chemical equations.

Key Points

  • Reactants: Substances you start with.
  • Products: Substances you end up with.
  • Law of Conservation of Mass: Matter is not created or destroyed in a reaction.

Writing Equations

Chemical equations show reactants and products, often using symbols and formulas, such as:

\[ 2H_2 + O_2 \rightarrow 2H_2O \]

Real-World Applications

Chemical reactions power batteries, fuel cars, and even help us cook food!

Key Formula

\[2H_2 + O_2 \rightarrow 2H_2O\]

Examples

  • Combining vinegar and baking soda causes a fizzing reaction.

  • Gasoline burning in a car engine is a chemical reaction.

In a Nutshell

Chemical reactions transform substances and can be described by equations.

Key Terms

Reactant
A substance that takes part in a chemical reaction.
Product
A substance produced by a chemical reaction.
Next
Forces, Motion, and Newton's Laws