Foundations of Chemistry
Chapter 1: introduction to chemistry
Chemistry is the study of everything around us: from respiration to rusting metals. Primarily, chemistry involves the study of different kinds of matter. Scientists that study chemistry, called chemists, use scientific methods to systematically pose and test solutions to questions and assess the results of tests. Ultimately, some scientific investigations result in the development of technology that can improve our lives and the world around us.
Chapter 2: analyzing data
Chemists use an internationally recognized system of units, called SI units, to communicate their findings. In order to communicate their findings in a clean and orderly manner, scientists will often express numbers in scientific notation and solve problems using dimensional analysis. Experimentally determined measurements contain uncertainties that affect how a calculated value results. Graphs will often accompany numerical data, as they visually depict said data, potentially making it easier to see patterns and trends.
chapter 3: Matter – properties and Changes
Most common substances that we encounter in everyday life exist as solids, liquids, or gases. These different states of matter have varied properties, both physical and chemical. Matter – loosely defined as what makes up a substance – can undergo both physical and chemical changes. Most everyday matter occurs as mixtures, which is a combination of two or more substances. A combination of two or more elements is known as a compound, which can result in varying physical and chemical properties as opposed to elements.