What will we use for this experiment? (Continued from previous page) We have decided that we will need a certain number of grams of water. How is it possible to measure water in grams? Usually we measure water in what units? ??? liters (L), centiliters (cl) or milliliters (ml) Knowing that one liter of water has a mass of 1 kg, how much would we need to make one gram? Think about the units and their prefixes. In a kilogram there are 1000 grams. In a liter there are how many milligrams? ??? 1000 ml in 1 L So, in order to get one gram of water, you can measure out how many milliliters (ml) of water? ??? 1 ml of water has a mass of 1 g. Since that is a very small amount of water and it would be difficult to measure any temperature changes in such a small quantity, we will use 25 ml of water (which also equals 25 grams, remember). That's about half a test tube, which is a reasonable quantity. What else do we need besides food and water for this experiment? Now we need a way to get the energy out of the peanut so it can heat up the water. How can we do that? ...The answer is on the next page. << Previous Page Next Page >>
We have decided that we will need a certain number of grams of water. How is it possible to measure water in grams? Usually we measure water in what units? ??? liters (L), centiliters (cl) or milliliters (ml) Knowing that one liter of water has a mass of 1 kg, how much would we need to make one gram? Think about the units and their prefixes. In a kilogram there are 1000 grams. In a liter there are how many milligrams? ??? 1000 ml in 1 L So, in order to get one gram of water, you can measure out how many milliliters (ml) of water? ??? 1 ml of water has a mass of 1 g. Since that is a very small amount of water and it would be difficult to measure any temperature changes in such a small quantity, we will use 25 ml of water (which also equals 25 grams, remember). That's about half a test tube, which is a reasonable quantity. What else do we need besides food and water for this experiment? Now we need a way to get the energy out of the peanut so it can heat up the water. How can we do that? ...The answer is on the next page.
We have decided that we will need a certain number of grams of water. How is it possible to measure water in grams? Usually we measure water in what units? ??? liters (L), centiliters (cl) or milliliters (ml)
Knowing that one liter of water has a mass of 1 kg, how much would we need to make one gram? Think about the units and their prefixes. In a kilogram there are 1000 grams. In a liter there are how many milligrams? ??? 1000 ml in 1 L So, in order to get one gram of water, you can measure out how many milliliters (ml) of water? ??? 1 ml of water has a mass of 1 g.
Since that is a very small amount of water and it would be difficult to measure any temperature changes in such a small quantity, we will use 25 ml of water (which also equals 25 grams, remember). That's about half a test tube, which is a reasonable quantity.
What else do we need besides food and water for this experiment? Now we need a way to get the energy out of the peanut so it can heat up the water. How can we do that? ...The answer is on the next page.
Next Page >>