4.1 Study guide Flashcards
1
Q
What are the charges of protons, neutrons, and electrons?
A
Protons have a positive charge, neutrons have a neutral charge, and electrons have a negative charge.
2
Q
What is an isotope?
A
An isotope is a variant of an element that differs from other atoms of the element by the mass number.
3
Q
What is the atomic mass of a nitrogen element if there is 7 neutrons?
A
Nitrogen atoms have 7 protons, so 7 protons plus 7 neutrons gives an atomic mass of 14.
4
Q
How can isotopes be used in science?
A
Isotopes can be used in radiocarbon dating and they can be used to trace organisms.
5
Q
How do you find the ion charge of an element?
A
The ion charge can be found by subtracting the number of electrons from the number of protons.
