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Unit 1 Chemistry
Terms from Unit 1
| Question | Answer |
|---|---|
| scientific method | process of scientific investigation |
| matter | anything that has mass and takes up space |
| hypothesis | an educated guess |
| control | thing that remains constant during an experiment |
| beaker | lab instrument used to hold liquids in the lab |
| Chemical or Physical Change? glass breaking | physical |
| Chemical or Physical Change? lighting a match | chemical |
| Chemical or Physical Change? car rusting | chemical |
| Chemical or Physical Change? ripping paper | physical |
| Chemical or Physical Change? ice melting | physical |
| graduated cylinder | used to measure the volume of liquids |
| triple-beam balance | used to measure the mass of an object |
| volume | the amount of space an object takes up |
| solid | matter that has a definite volume and shape |
| liquid | matter that has a definite volume but NOT a definite shape |
| gas | matter that does not have a definite volume or a definite shape |
| plasma | matter composed of charged particles |
| density | equals mass divided by volume |
| How many sig figs? 20403 | 5 |
| How many sig figs? 0.0050 | 2 |
| How many sig figs? 4600 | 2 |
| How many sig figs? 76090 | 4 |
| What is 4355 in scientific notation? | 4.355 x 10^3 |