compounds & formulas Flashcards
(6 cards)
1
Q
what is a compound?
A
a substance that contains two or more elements which are chemically combined.
2
Q
what does a chemical formula show?
A
the symbols for each element in the compound
the number of atoms of each element
3
Q
what’s the formula for sodium chloride?
A
NaCl
4
Q
what’s the formula for magnesium iodide?
A
MgI2
5
Q
what’s the formula for potassium bromide?
A
KBr
6
Q
what’s the formula for methane?
A
CH4
