Extensive and intensive properties Intensive. don’t depend on amount. density, color etc. internal characteristics that do not change Extensive are amount related, ( mass, size, length etc) table on 15 is good one to memorize

Forms of energy!!! kinetic - energy of movement potential- stored energy Co nservation of energy - energy can't be created or destroyed only change forms

Forms of energy!!! kinetic - energy of movement potential- stored energy potential- stored kinetic moving

temeprature we use celcius and Kelvin. NO Fahrenheit. why? cause Celcius more compatible with metric. no other major reason, but it is the accepted unit. Kelvin - the true SI unit, created so that coldest temp is what needed to make atoms stop moving. ABSOLUTE ZERO. C+ 273 = K K- 273 = C

Matter -has mass takes up space. All things including air are in this. Mass- measure of the amount of matter something has. Instead of mass lets say inertia. Inertia is the resistance to change in motion. vs weight- takes gravity into account STATES of MATTTER Solid liquid gas plasma, these do not change the matter so they are physical changes. Solid-definite shape and volume, particles are close together, they vibrate against each other and resist movement as a whole Liquid-definite volume, not shape. Particles touch, flow easily as a whole, take shape of container Gas- no shape or volume expand to fit volume of container. Lots of space between molecules, constant motion. Plasma- no shape or volume and has charged particles ( sun) need excess amount of heat to become plasma

percent error! tells how far off an experiment is from where it is supposed to be experiemental answer- expected answer expected answer answer times 100

Ph ysical properties/changes-those that can be physically changed, the matter remains the same. Size, shape, STATE Chemical p/c- changes the composisition of the matter, burning, rusting, tarnishing, etc. chemical reactions are written like math reactions reactant + reactant = product + product

physical properties? chemical properties?

Chem reactions have a basic look. Much like math relationship. Reactant + reactant ® product + product This is usually exothermic, meaning it gives off heat. Some are endothermic, meaning take in heat. 3 things to look for prove chem reaction heat and light gas precipitate ( solid from 2 liquids) other things happen in chem. Reactions, but these 3 are major signifiers

Types of matter can be mixtures or pure substances 1. Mixture- 2 or more types of matter (retaining own properties) that can be separated by physical means., salad, granite, rock, your backpack mixtures can be Heterogeneous- can see different parts throughout, ie. Wood, blood, Homogeneous- looks the same throughout ie. Sugar in water, air

Pure substances- these are only one type of matter. Elements- one type of atom, all are on the periodic table. Learn it Compounds- chemical combos of elements. Sugar, salt etc. ( if it has a chemical formula, it is a compound

Label the following as mixture or pure substance 1. chocolate milk6. tin 2. nylon7. cookie batter 3. steel 4. carbon dioxide 5. Helium 8-9 of the choices above, please choose 2 compounds 10. choose one mixture that is homogenous

Law of conservation of mass- in any chemical reaction, the total amount of matter that goes into the reaction has to be found somewhere at the end of the reaction. ( in science terms- mass cannot be created or destroyed, only converted into different forms) Where ? - spill on table, into the air etc.