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The atomic number of Potassium is 16. Explain how the electrons are arranged.
An atom has the same number of protons and electrons so a potassium atom has 19 electrons. The inner shell fills up the first. The second shell has 8 electrons and the third shell has 8 electrons. The last shells has 1 electron. Making it 2.8.8.1
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name three situations where mitosis is used to produce new cells.
Growth, reparing damaged parts of the body and asexual reproduction.
2 of 5
how does the size of current change if the potential difference of the power supply is changed
If the potential difference is increased, the current increases. If the potential difference is made smaller,the current gets smaller.
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use the idea of rate of change of momentum to explain how seat belts work
seat belts stretch and slow you down gradually, instead of you coming to a stop suddenly when you hits the dashboard. when you slow down more gradually the rate of change of momnetum is less and there is smaller force on you.
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write down the three types of radation in order of how penetrating they are starting with the most penetrating.
Gamma, beta, alpha
5 of 5

Other cards in this set

Card 2

Front

name three situations where mitosis is used to produce new cells.

Back

Growth, reparing damaged parts of the body and asexual reproduction.

Card 3

Front

how does the size of current change if the potential difference of the power supply is changed

Back

Preview of the front of card 3

Card 4

Front

use the idea of rate of change of momentum to explain how seat belts work

Back

Preview of the front of card 4

Card 5

Front

write down the three types of radation in order of how penetrating they are starting with the most penetrating.

Back

Preview of the front of card 5

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