lesson 2 interpreting a chemical formula Flashcards
1
Q
in a specific compound, the number of atoms in each element is fixed
why cant we change the numbers
A
because if we do then we have a different compound
2
Q
CaSO4=calcium sulfate
CaSO3=calcium sulfite
what does this show
A
this shows one small number can change the compound
3
Q
a chemical formula tells us what…
A
the elements in a molecule and the number of atoms of each element
4
Q
if the chemical formula has no numbers what does that tell us about the element
A
that it has 1 atom
5
Q
if we have a certain number next to the chemical formula, what does that show
A
the number of atoms it has
6
Q
in a chemical formula the little number after the brackets do what
A
multiplies everything inside the brackets
