Ions and Ion Charges
Presentation
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Science
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7th - 8th Grade
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Practice Problem
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Easy
+1
Standards-aligned
Travis Martin
Used 303+ times
FREE Resource
10 Slides • 9 Questions
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Ions and Ion Charges
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Multiple Choice
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Ions help nerves send impulses.
Nerve impulses are required for moving muscles.
Example: Your heart beats because nerve impulses are sent from your brain to heart muscles.
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EKGs measure nerve impulses within your heart muscles by voltage.
Voltage is a measure of the + and - charges across a material, like a battery.
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Multiple Choice
What happens to the voltage (mV) over time as the heart is beating?
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Open Ended
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By themselves, elements are neutral.
You have learned that elements contain the same # of protons (p+) and electrons (e-).
Example: Sodium (Na) 11 p+ & 11 e-
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Multiple Choice
Sodium (Na) has 1 electron (e-) in its outer shell (orbital). How can it make a full outer shell? (HINT: Think of which option would be "easier" for the atom.)
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Sodium (Na) will give away its electron to an element like Chlorine (Cl).
The picture only shows the outer shell (orbital) of Na and Cl.
Chlorine has 7 e-, so its easier to take on 1 e- to make a full 8 e- in its outer shell.
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Sodium (Na) is in Group 1 (red) on the Periodic Table.
All elements in Group 1 will give away or DONATE 1 e- to make a full outer shell.
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Chlorine (Cl) is in Group 17 (Green) on the periodic table.
All elements in Group 17 will ACCEPT 1e- to make a full outer shell.
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Chlorine (Cl) is in Group 17 (Green) on the periodic table.
All elements in Group 17 will ACCEPT 1e- to make a full outer shell.
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Multiple Choice
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Multiple Choice
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Multiple Choice
Which of the following would donate 1 e- and become a +1 charge like Na? (HINT: Find Group 1)
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Multiple Choice
Which of the following would accept 1 e- and become a -1 charge like Cl? (HINT: Find Group 17)
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Open Ended
What do you think the body uses to increase (+) or decrease (-) voltages for nerve impulses? Use what you have learned about ions in this lesson to help answer this question. Take an guess.
Ions and Ion Charges
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