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Make an entry- Bellringer 11/18

Make an entry- Bellringer 11/18 Answer the questions below using COMPLETE sentences that include the question. What kind of atoms do we look for to determine if a molecule contains chemical energy? Does water contain chemical energy? Why/why not ?

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Make an entry- Bellringer 11/18

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  1. Make an entry- Bellringer 11/18 Answer the questions below using COMPLETE sentences that include the question. • What kind of atoms do we look for to determine if a molecule contains chemical energy? Does water contain chemical energy? Why/why not? • If you have two apples, one fresh and one dried, which would have the most energy? Explain.

  2. Our First Task • Today we are going to take apart our plant cups and make some final measurements that will allow us to answer the following questions: • Is light essential? • Is water essential? • Is soil essential? And • Did the soil provide the matter for the increase in mass from seed to plant? THESE ARE THE EXPERIMENTS THAT YOU AND YOUR CLASSMATES SET UP. WE MEASURED THE HEIGHT OF EACH CONDITION.

  3. Take out your Plant Data Table • At the bottom of the data table we have a place to record the mass of soil today (dry soil) and the mass of the plants today (dry) • Why are they dry? We are measuring the plants dry because we want to see if there has been a change in permanent mass of the plantmaterial • Remember that the seed was dry when we started—just starch and an embryo

  4. Each person has a Job “A” TABLE--LIGHT, SOIL, OR WATER CUP • PLANT MASS MEASURER • SOIL MASS MEASURER “B” TABLE—DARK, NOT SOIL, NO WATER CUP • PLANT MASS MEASURER • SOIL MASS MEASURER • MAKE SURE ALL SOIL IS SEPARATED FROM THE PLANT AND IS ACCOUNTED FOR—WE ARE TRYING TO DETERMINE IF THE PLANT GAINED MASS BY TAKING IN SOIL

  5. YOUR TABLE IS DONE WHEN • Mass of soil is measured and recorded in your data table • Mass of plants is measured and recorded in your data table • Soil is poured into labeled bin • Plants/plant material is put into labeled bin • White Styrofoam cups are wiped out, labels removed, stacked on teacher’s desk • Data is entered into class data table on teacher’s desk—make sure to indicate if it is a + or – change (if your data is NOT reliable put an * next to your data)

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