Chemistry Study Guide
Chapter 1 * What is Chemistry?
-it is the study of the composition of substances and the changes they undergo. * What are the 5 branches of chemistry? * Organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry. * What is the difference between a theory and law?
-a theory is a thoroughly tested explanation of why experiments give certain results. A scientific law is a concise statement that summarized the results of a broad spectrum of observations and experiments. * Know how to describe the states of matter in terms of a definite or indefinite volume and shape.
-the 3 states of matter are solid, liquid, and gas. A solid is matter that has a definite shape and volume,. A liquid is matter that flows, but it has a fixed volume and takes the shape of its container. A gas is matter that takes shape and volume of its container. * Define matter, substances, mixtures, elements, compounds, homogenous mixture, heterogeneous mixture and solutions.
-Matter: anything that takes up space and has mass.
-Substances: a sample of matter having a uniform and definite composition. Elements/Compounds.
-Mixtures: a combination of 2 or more substances that are not chemically combined.
-Elements: a substance that cannot be changed into a simpler substance under normal laboratory conditions.
-Compounds: a substance that can be broken down to simpler substances only by chemical reactions.
-Homogenous Mixture: a mixture that is completely uniform in composition.
-Heterogeneous Mixture: a reaction carried out with a hetero. Mixture of reactants. * What is a phase?
-a phase is any part of a system with uniform composition and properties. * Difference between chemical and physical change.
-physical change is an alteration of a substance that doesn’t affect its chemical composition unlike chemical changes. * Difference between a chemical and physical properties.
-chemical property is the ability of a
-it is the study of the composition of substances and the changes they undergo. * What are the 5 branches of chemistry? * Organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry. * What is the difference between a theory and law?
-a theory is a thoroughly tested explanation of why experiments give certain results. A scientific law is a concise statement that summarized the results of a broad spectrum of observations and experiments. * Know how to describe the states of matter in terms of a definite or indefinite volume and shape.
-the 3 states of matter are solid, liquid, and gas. A solid is matter that has a definite shape and volume,. A liquid is matter that flows, but it has a fixed volume and takes the shape of its container. A gas is matter that takes shape and volume of its container. * Define matter, substances, mixtures, elements, compounds, homogenous mixture, heterogeneous mixture and solutions.
-Matter: anything that takes up space and has mass.
-Substances: a sample of matter having a uniform and definite composition. Elements/Compounds.
-Mixtures: a combination of 2 or more substances that are not chemically combined.
-Elements: a substance that cannot be changed into a simpler substance under normal laboratory conditions.
-Compounds: a substance that can be broken down to simpler substances only by chemical reactions.
-Homogenous Mixture: a mixture that is completely uniform in composition.
-Heterogeneous Mixture: a reaction carried out with a hetero. Mixture of reactants. * What is a phase?
-a phase is any part of a system with uniform composition and properties. * Difference between chemical and physical change.
-physical change is an alteration of a substance that doesn’t affect its chemical composition unlike chemical changes. * Difference between a chemical and physical properties.
-chemical property is the ability of a