This document provides an overview of chemistry, including what it is, different types of chemistry, the scientific method, matter and its properties, energy, and chemical reactions. Chemistry is the study of matter - its composition, properties, and the changes it undergoes. There are different types including analytical, inorganic, organic, and biochemistry. The scientific method is used to solve problems through observation, hypothesis, experimentation, and developing theories. Matter has mass and takes up space, and can be elements, compounds, or mixtures. Energy powers chemical and physical changes and exists in different forms like potential, kinetic, heat, and chemical. Chemical reactions occur when substances are transformed into new substances.

1. Chemistry: The Study of Matter

9. Observations Hypothesis Experiment Law Theory (Model) Prediction Experiment Modify

14. States of Matter Solid Liquid Gas Definite Volume? YES YES NO Definite Shape? YES NO NO Temp. increase Small Expans. Small Expans. Large Expans. Com-pressible? NO NO YES

15. Solid Liquid Gas Melt Evaporate Condense Freeze

21. Compound or Mixture Compound Mixture One kind of piece- Molecules More than one kind - Molecule or atoms Making is a chemical change Making is a physical change Only one kind Variable composition

22. Which is it? Element Compound Mixture