Chemistry- the study of the composition, structure and properties of matter and the changes it undergoes. What objects in this room are related to Chemistry? How did you get to school today? Any chemistry involved? - how it behaves, its make up, internal arrangement, changes when heated, cool, or mixed with other materials. ----all related to chemistry Instruments- are used in Chemistry to extend our ability to observe and make measurements (microscopes,rulers, balances, spectroscopes, etc..)

Branches of Chemistry: Organic- the study of carbon containing compounds. Inorganic- the study of all substances not classified as organic. Physical- the study of the properties and the changes of matter and their relation to energy. Analytical- the I.D. Of the components and composition of materials. Biochemisty – the study of substances and processed occurring in living things. Theoretical- designing and predicting the properties of new compounds

Applied research Technological development Chemical- any substance that has a definite composition (sucrose, glucose, water,CO 2 ) Basic research-is carried out for the sake of increasing knowledge. Applied research- carried out to solve a problem ( a new environmentally refrigerant to replace freon) Technological development- involves the production and use of products that improve our quality of life. (computers, catalytic converters, biodegradable materials, )

Technology- is the application of knowledge for practical purposes Matter- anything that has mass and takes up space Volume- the amount of 3 dimensional space an object occupies. Atom- the smallest unit of an element that maintains the properties of that element. Element- is a pure substance made of only one kind of atom. Molecule- the smallest unit of an element or compound that retains all of the properties.

Compound- a substance that is made from the atoms of 2 or more elements that are chemically bonded. Products- Substances that are formed in a chemical reaction. Reactants- substances that react in a chemical reaction Reactants Products Plasma- a high temp. physical state of matter in which atoms lose their electrons. Chemical properties- relates to a substance’s ability to undergo changes that transform it into different substances.

Physical properties- characteristics that can be observed or measured without changing the identity of the substance (melting point, boiling point) Physical state- is a basic property of matter. Solid- definite volume and shape(tightly packed ) (coal, quartz) Liquid- has a definite volume but no definite shape(takes the shape of the container) - able to slide past each other Gas-(fills its available volume) no definite volume or shape- particles move rapidly and are far apart. Matter- anything that has mass and takes up space (air, smoke water vapor)

How would you write the equation for the reaction in which water is produced from hydrogen and oxygen? How would you write the equation for the reaction of oxygen with hydrogen to produce water? How would you write the reaction for water being decomposed to produce hydrogen and oxygen? The equation for the burning of ethanol in oxygen to produce carbon dioxide and water would be____________

Nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are known as the ___________. Light is not matter. Endothermic reaction- a reaction in which heat is absorbed (the container gets colder) Exothermic reaction- a reaction in which heat is released….