It is incorporated into the carbon cycle, so that all living things, including you, contain radioactive carbon-14.
Living things have about 15 disintegrations per minute per gram of carbon.
You can make science-themed valentines, create a borax crystal heart, learn a valentine demo to share with your sweetheart, and more.
This lesson is the third in a three-part series about the nucleus, isotopes, and radioactive decay.
On a separate sheet of paper, immediately record the volume of Frosty's melted remains (water) in your graduated cylinder and note the time on the clock.
Make a data table and, at regular intervals (you decide how long), record the time on the clock and the volume of water in the graduated cylinder.
The Case of the Melting Ice Frosty the Snowman lies melting in the funnels at your lab station.
There were no eyewitnesses, but there are several suspects. You need to determine the exact time at which Frosty was put into the funnels to melt away, leaving no trace.
The lab stations should have been set up already as described in the Planning Ahead section above.
Students should complete the Analysis section of the lab sheet, which will be used as part of their assessment.
Empty the graduated cylinders between classes if the volume is more than about 25 ml.