chemistry chapter 5 Flashcards
1
Q
what is a molecular formula
A
the molecular formula of a compound shows the number and type of different atoms in one molecule
2
Q
what is the empirical formula
A
the empirical formula of a compound shows the simplest whole number ratio of the different atoms or ions in a compound
3
Q
how do we write chemical equations
A
during chemical equations, reactants are converted into products
4
Q
what does symbol (s) mean
A
solid
5
Q
what does symbol (g) mean
A
gas
6
Q
what does symbol (l) mean
A
liquid
7
Q
what does symbol (aq) mean
A
aqueous solution
8
Q
which elements have a positive charge on the periodic table
A
group 1 metals +1, group 2 metals +2, group 3 metals +3
9
Q
which elements have a negative charge on the periodic table
A
group 7 elements -1. group 6 elements -2, group 5 elements -3
