C 1.7 Ions, Atoms, Isotopes
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What changes for there to be a negative/positive ion?
The number of electrons. Gain electrons= negative ion Lose electrons=positive ion Remember electrons are negative.
What are isotopes?
An atom of the same element where the number of neutrons are different
What percentage is there of chlorine 35 mass number
75 percent
What percentage is there of chlorine 37
25 percent that is why the periodic table says 35.5 for the mass number.
Why are there decimals for some elements mass numbers?
Isotopes , the same element with different number of neutrons therefore the decimal is an average depending on the percentages that there are of the different forms (good example chorine).
How to find an answer in nano meters?
X10 to the power of -9
What is an ion?
A charged atom
Where does the mass number go?
Above and left of the element
Where does the atomic number go?
Below and left of element
How big is am atom?
1/10 of a billionth of a meter across (perspective of how small they are)
Can isotopes physical properties such as density differ?
Yes