Due: 9/24 at the beginning of lecture; worth 10 points Answers must be written by hand on this worksheet; Do not use the internet for definitions or any of your answers 1. What are the three subatomic particles? What is the charge of each particle? 2. Draw a model of the atom carbon—12 (atomic #6) including the following: a. The atomic nucleus—including the protons and neutrons b. Shells—properly filled with electrons 3. The atomic number is equal to the number of positively-charged ____________________ in the atomic nucleus. The atomic number is also equal to the number of ____________________ in atom that is uncharged.
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The three subatomic particles are protons, neutrons, and electrons. Show more…
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ATOMS An atom is composed of protons, neutrons, and electrons. A proton has a positive charge (represented by $+1$ ), a neutron has no charge, and an electron has a negative charge $(-1) .$ Two simple models of atoms are shown below. a. How many protons does the atom in figure (a) have? How many electrons? b. What is the net charge of the atom in figure (a)? c. How many protons does the atom in figure (b) have? How many electrons? d. What is the net charge of the atom in figure (b)?
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One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has charge of $+1$. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0 , because it has 6 electrons and 6 protons and $-6+6=0$. Find the overall charge for the rest of the elements on the list. \begin{tabular}{|l|c|c|c|} \hline & charge from electrons & charge from protons & overall charge \\ \hline carbon & $-6$ & $+6$ & 0 \\ \hline neon & $-10$ & $+10$ & \\ \hline oxide & $-10$ & $+8$ & \\ \hline copper & $-27$ & $+29$ & \\ \hline tin & $-50$ & $+50$ & \\ \hline \end{tabular}
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