Atomic Structure Flashcards
1
Q
In the P.T, what is a group?
A
A column (there are 8 columns)
2
Q
Why do elements in the same group have similar chemical properties?
A
They have the same number of outer electrons
3
Q
What is a period?
A
a row of elements
4
Q
What groups are very reactive?
A
1+7
5
Q
What are elements made up of?
A
atoms
6
Q
Where are Protons and Neutrons found?
A
the nucleus of an atom
7
Q
Where are electrons found?
A
in electron shells orbiting the nucleus
8
Q
What is the atomic number used for?
A
to order the elements in the periodic table
9
Q
What is the charge of a proton
A
+
10
Q
What is the charge of an electron
A
-
11
Q
Does a neutron have charge
A
no
12
Q
What is the mass of a proton
A
1
13
Q
What is the mass of an electron
A
0
14
Q
what is the mass of a neutron
A
1
15
Q
What holds the electrons in place
A
the positive nucleus
