1.7 Ions, atoms and isotopes Flashcards
1
Q
Ion def
A
A charged particle produced by the loss or gain of electrons
2
Q
What is an example of when atoms lose or gain electrons
A
When metals react with non metals
3
Q
How many atoms does a person have in their body
A
7x10^27
4
Q
Isotopes def
A
Atoms that have the same number of protons but different number of neutrons (ie they have the same atomic number but different mass numbers)
5
Q
What happens sometimes if you add extra neutrons in an atom
A
It makes the nucleus unstable so it’s radioactive
6
Q
Samples of different isotopes of an element have different what
A
Physical properties (ie different density or radioactivity)
7
Q
Do isotopes of an element always have the same chemical properties
A
Yes because the electronic structure is the same
