c1 atomic structure and periodic table Flashcards
1
Q
what is made up of atoms
A
everything
2
Q
what is an ion
A
an atom with a positive or negative charge
3
Q
what is an isotope
A
an atom with the same number of protons but a different number of neutrons
4
Q
a molecule is
A
2 or more atoms held together by chemical bonds
5
Q
a compound is
A
2 or more different elements chemically bonded
6
Q
a mixture is
A
2or more substances not chemically combined
7
Q
example of a mixture
A
air (co2, o2, n2)
8
Q
method to obtain a sample of salt from salt solution
A
evapouration evapourates the water away 😀
9
Q
what is the goal of simple distillation
A
seperating out a liquid from a solution this is exploiting different boiling points
10
Q
what is the goal of fractional distillation
A
seperating mixtures of liquids with similar boiling points
