Review for the Final Exam Organized by Chapter (Chapter 2 (Matter has two…
Review for the Final Exam Organized by Chapter
Chemistry can be defined as the science that deals with the materials of the universe and the changes that these materials undergo.
The scientific method can be used to solve problems
An observation is something that is witnessed and can be recorded. A theory is an interpretation—a possible explanation of why nature behaves in a particular way.
Matter has two characteristics, it has mass and it occupies space.
All matter is composed out of tiny particles called atoms.
Compounds contain two or more different types of atoms bound together in a particular way.
A chemical change involves a change in the fundamental components of the substance; a given substance changes into a different substance or substances. Chemical changes are called reactions: silver tarnishes by reacting with substances in the air; a plant forms a leaf by combining various substances from the air and soil; and so on.