atoms,elements,compounds Flashcards
what is a key property of an element
In an element, all of the atoms are the same.
what is a key thing about compounds
Compounds contain two or more different elements chemically combined in fixed proportions
what is fixed proportions
it is where for every one of an element there is a another (for every one atom of magnesium we have one atom of sulfur)
what is the structure of an atom
it is a nucleus sourounded by electrons in its outer shells
what is the neucleus made of
protons and neutrons
what charge does protons have
+1
what charge does neutrons have
0
what charge do electrons have
-1
what is the relative mass both of the particles in the nucleus have
A relative mass of 1
what do we call an atom where there is an equal amount of electrons and protons
Neutral
what is a atom that has lost/gained electrons called
ion