Start by cutting out three of the same size hearts (two purple, one pink) and glue them back to back to make the hot air balloon.
Make sure to follow Crafty Morning on Facebook, Pinterest, and Instagram or subscribe to our Weekly Newsletter! How do I make a model of an atom?Do you need to make a model or a drawing of an atom for science class?
We notice that you are using Internet Explorer version 9 or older which no longer supports Craftsy. If so, follow these instructions to learn where all of the atom's pieces go.Step 1 - Gather InformationBefore you can build your model, you will need to know how many protons, neutrons and electrons your atom has. For the best experience we suggest upgrading your browser to the latest version, or optionally downloading Google Chrome or Firefox. Using information found on the Periodic Table of Elements, we can tell that an average atom of nitrogen contains 7 protons, 7 neutrons and 7 electrons.Step 2 - Gather MaterialsNow that you know how many protons, neutrons and electrons you will need for your model, it is time to decide what to use to represent them. Ping-pong balls, rubber balls, ball bearings, golf balls and styrofoam balls have all been used in the past.
It is helpful if the balls are color coded so that it is easier to tell which balls are protons, which are neutrons and which are electrons. It is also helpful if the electrons are smaller than the protons and neutrons.Step 3 - Build the NucleusThe nucleus, the central part of the atom, is made from protons and neutrons. For nitrogen, the nucleus would look something like this:Step 4 - Place the ElectronsThe electrons are found outside the nucleus. There are a few ways this can be done:The Planetary ModelThis model depicts an earlier view of the structure of the atom, shortly after the nucleus was discovered.


In it, the electrons are said to orbit the nucleus much like the planets in the solar system orbit the sun. They learned that electrons could only occupy certain orbits (usually referred to as energy levels or shells) around the nucleus. They also discovered that only a certain number of electrons could fit in each energy level.To properly place the electrons around the nucleus, you will need to refer to your element's electron configuration table.
To find your element's electron configuration table, go to the Periodic Table of Elements, click on your element and scroll to the bottom of the page.
If you do not know how to read the electron configuration table, read the 'How do I read an electron configuration table?' page for help.According to nitrogen's electron configuration table, an atom of nitrogen contains two electrons in its first energy level and five electrons in its second energy level. A Bohr model of a nitrogen atom could look like this:In the Bohr model, a nitrogen atom has a central nucleus, composed of seven protons and seven neutrons, surrounded by seven electrons. Two of the electrons are in the first energy level while the other five are in the second energy level.The Refined Bohr ModelFurther studies showed that the Bohr model wasn't as accurate as it could be.
The sub-shells, which are named s, p, d and f, can each hold only a certain number of electrons. The s sub-shell can only hold 2 electrons, the p sub-shell can hold 6, the d sub-shell can hold 10 and the f sub-shell can hold 14. The number of available sub-shells increases as the energy level increases.To properly place the electrons around the nucleus, you will need to refer to your element's electron configuration table. If you do not know how to read the electron configuration table, read the 'How do I read an electron configuration table?' page for help.According to nitrogen's electron configuration table, an atom of nitrogen contains two electrons in its first energy level (both in the s sub-shell) and five electrons in its second energy level (two in the s sub-shell and three in the p sub-shell). A more accurate Bohr model of a nitrogen atom could look like this:In the refined Bohr model, a nitrogen atom has a central nucleus, composed of seven protons and seven neutrons, surrounded by seven electrons.


Two of the electrons are in the s sub-shell of the first energy level, two are in the s sub-shell of the second energy level and three are in the p sub-shell of the second energy level.Step 5 - Things to RememberIt is important to remember that a model is a simplified representation of an object.
Some of the models discussed above are more accurate than others, but none of them are completely correct. Here are a couple of the things we have ignored:The Size of the NucleusIn the drawings above, the nucleus is too large. Or, put another way, if the nucleus is going to be that large, the electrons are too close.
If we wanted our drawings to be accurate, we would have to place the electrons about a mile away. Clearly, it would be difficult to bring a drawing that large to class.Electrons do not Orbit the NucleusIn the drawings above, we have drawn nice circles showing where the electrons go around the atom.
In reality, scientists cannot tell exactly where an electron is at a given moment or where it is going.
They can calculate the probability that an electron will be found in a given volume of space, but that isn't the same as knowing where that electron is. Although it is the most accurate description that scientists currently have of the atom, it is much more difficult to understand.



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