Protons have a ______________charge.
Protons have a ______________charge.
Neutrons have a ______________charge.
An element is an element based on the number of _________________.
Electrons are located outside the nucleus in orbitals called shells.
The first obital/shell of an atom can hold up to _____________electrons.
The second obital of an atom can hold up to _____________electrons.
The number of valence electrons determines the
If needed, refer to a Periodic Table to help you with this question. How many more electrons could fit in the 2nd orbital shell of oxygen?
An atom is most stable when its outer shell only has half the valence electrons in it.
Practice reading a Periodic Table. Hydrogen's atomic symbol is H, atomic mass is 1.008, atomic number 1, # of protons 1, # of neutrons 0, # of electrons 1, and is located in Group 1, Period 1.
Practice reading a Periodic Table. Helium's atomic symbol is He, atomic mass is 4.0026, atomic number 2, # of protons 2, # of neutrons 2, # of electrons 2, and is located in Group 13, Period 1.
Practice reading a Periodic Table. Neon's atomic symbol is Ne, atomic mass is 20.180, atomic number 10 meaning that Neon has the exact same number of 10 protons, 10 neutrons, and 10 electrons. Neon is located in Group 2, Period 2.
Select the correct word that matches this definition:
an atom that has gained or lost at least one electron
Select the correct word that matches this definition:
composed of at least two different types of atoms
Select the correct word that matches this definition:
composed of the same type of atoms
If an atom has lost an electron, then it has an extra __________________making the ion _____________ because the numbers of electrons and protons aren't equal anymore.
If an atom has gained an electron, then it has an extra __________________making the ion _____________ because the numbers of electrons and protons aren't equal anymore.
Mg+4 would indicate that magnesium has lost 4 electrons.
Cl- would indicate that chlorine has gained one extra electron.
When an element loses an electron, the element becomes a _______________ion
When an element gaines an electron, the element becomes a _______________ion
What do the three isotopes of element X have in common?