| A | B |
|---|
| Science | process of learning about the natural world |
| interpreting data | identify a trend or pattern in graph |
| observing | using five senses to gather information |
| data | facts, figures, evidence |
| hypothesis | possible explanation |
| manipulated variable | variable that is changed on purpose |
| responding variable | variable that changes as a result of changes in the manipulated variable |
| scientific theory | well tested and explains a wide range of observations |
| before conducting laboratory experiment | read every step of procedure |
| physical change | mixing a milkshake |
| chemical change | burning gas in an engine |
| matter has | specific substance that can be identified |
| mixture has | two parts not chemically combined |
| substances that cannot be broken down | element |
| elements are represented by | symbols |
| weight is | measurement of the force of gravity on an object |
| mass is | how much matter an object contains |
| SI unit for mass | Kilogram |
| density | mass contained in a given volume |
| how to calculate density | divide mass by volume |
| atoms | tiny particles of elements |
| Democtritus | first to thing of matter as atoms |
| Dalton believed | all atoms are exactly alike |
| molecule | group of atoms htat are bonded together |
| chemical bonds | holds atoms together in a molecule |
| electrolysis works to | break chemical bonds that join a metal and other elements |
| a solid has | definite volume and definite shape |
| viscosity | resistance of a liquid to flowing |
