Atoms, ions and compounds

Question 1

What are the relative masses of a proton,
neutron, and electron?

Answer 1

1, 1, and
1836
1
respectively

Question 2

What force holds an atom nucleus together?

Answer 2

strong nuclear force

Question 3

What is the proton number / atomic number of
an element?

Answer 3

the number of protons in the atom’s nucleus of an element

Question 4

What is the mass number of an element?

Answer 4

number of protons + number of neutrons

Question 5

What is an isotope?

Answer 5

an atom with the same number of protons but different number of
neutrons

Question 6

What is the equation for relative isotopic mass?

Answer 6

relative isotopic mass =
massof 1atom of C
12
1
mass of an isotope

Question 7

What is a mass spectrum?

Answer 7

the output from a mass spectrometer that shows the different
isotopes that make up an element

Question 8

What is the function of a mass spectrometer?

Answer 8

it accurately determines the mass and abundance of separate atoms
or molecules, to help us identify them