norris1969
New member
I've tried looking these questions up in my Biology book, but I can't find them.
The masses of subatomic particles are expressed in units called_________ ____________.
Protons and neutrons both have masses equal to _____________.
The atomic mass of the_______________ is about 1/1836 the mass of a single proton.
The number of protons in an atom's nucleus or the number of electrons circling about it is called the atom's ________________.
____________ are subtomic particles that do not have any electrical charge.
Element Atomic Number Atomic Mass Protons Nuetrons Electron
Boron 5 11 ______ ______ ______
Fluorine 9 19 ______ ______ ______
Gold 79 197 ______ ______ ______
Tin 50 119 ______ ______ _______
Uranium 92 238 ______ ______ _______
Calcium 20 ____ _______ 20 _______
Iodine 53 ____ _______ 74 _______
Tin (atomic number 50) has isotopes with the following masses. On the Lines provided write the number of neutrons found in each of these isotopes.
120 __________
118 __________
132 __________
110 __________
124 __________
115 __________
130 __________
109 __________
122 __________
Why are all these different atoms still considered to be atoms of tin?
The masses of subatomic particles are expressed in units called_________ ____________.
Protons and neutrons both have masses equal to _____________.
The atomic mass of the_______________ is about 1/1836 the mass of a single proton.
The number of protons in an atom's nucleus or the number of electrons circling about it is called the atom's ________________.
____________ are subtomic particles that do not have any electrical charge.
Element Atomic Number Atomic Mass Protons Nuetrons Electron
Boron 5 11 ______ ______ ______
Fluorine 9 19 ______ ______ ______
Gold 79 197 ______ ______ ______
Tin 50 119 ______ ______ _______
Uranium 92 238 ______ ______ _______
Calcium 20 ____ _______ 20 _______
Iodine 53 ____ _______ 74 _______
Tin (atomic number 50) has isotopes with the following masses. On the Lines provided write the number of neutrons found in each of these isotopes.
120 __________
118 __________
132 __________
110 __________
124 __________
115 __________
130 __________
109 __________
122 __________
Why are all these different atoms still considered to be atoms of tin?