Chemistry is the study of the composition of “matter” its composition, properties, and the changes it undergoes.
Matter - anything with mass and occupies space
Chemistry has a definite affect on everyday life - taste of foods, grades of gasoline, etc.
Living and nonliving things are made of matter.
Chemistry is the study of the composition , structure , and properties of matter and the changes it undergoes – such as burning fuels. C 2 H 5 OH + 3 O 2 2 CO 2 + 3 H 2 O + Energy Reactants Products
A theory (model) is an attempt to explain why it happened – this changes as new information is gathered.
- Page 22 Using your senses to obtain information Hypothesis is a proposed explanation; should be based on previous knowledge; an “educated” guess The procedure that is used to test the hypothesis A well-tested explanation for the observations; cannot be proven due to new discoveries Tells what happened