chapter 1-2

What is chemistry: the study of the composition of matter and changes that matter undergoes

what is mass: the amount of matter in an object; typical unit is gram

what is volume: how much space an object takes up; typical unit is L or cm^3

how does the composition of a pure compound differ from that of a mixture: pure compounds are substances made out of repeated elements, with 100% of the matererial made from the same formula, that cannot be separated; mixture is a combination of different materials/elements in a substance that can be separated and are different throughout the mixture

define physical property: a property/trait/action that doesn’t change the identity of the substance

define chemical property: a property/trait/action that does change the identity of the substance

is a piece of wood being sawed in half a chemical of physical property: physical

is milk turning sour a physical or chemical property: chemical

when metled butter solidifies in the refridgerator, what type of reaction takes place: physical

is melting an ice cube physical or chemical: physical

is burning a piece of paper chemical or physical: chemical

is sharpening a pencil chemical or physical: physical

is dissolving sugar in water chemical or physical: physical

is decomposing hydrogen peroxide physical of chemical: physical

what is an intensive property vs an extensive property: intensive properties do not rely on the amount; extensive properties does rely on the amount

is mass extensive or intensive: extensive

is boiling point extensive or intensive: intensive

is density extensive or intensive: intensive

is color extensive or intensive: intensive

classify coke: homogenous mixture

classify iron (II) nitrate: pure compound

classify silver: pure element’

classify milk: homogenous mixture

classify lucky charms: heterogenous mixture

classify jello with fruit: hetergenous mixture

chapter 3