1
Q
group number 1
A
alkali metals
2
Q
group 2
A
alkali earth metals
3
Q
group 7
A
halogens
4
Q
0 or 8
A
noble gases
5
Q
mendeleev periodic table
metals and non mixed metals
A
transition metals in a sepertae block
6
Q
no noble gases
A
noble gases present
7
Q
in order of mass number
A
elements in order of atomic number
8
Q
what is element
A
an element is the simpliest form of a substance is made up of one type of atom and cannot be broken down into simplier substances
9
Q
what is a compound
A
a compound is made of two or more elements chemically combined together
10
Q
mass number
A
is normally bigger
11
Q
atomic number
A
smaller
12
Q
proton charge
A
+1
13
Q
electron charge
A
-1
14
Q
neutron charge
A
0 netural
summer exams 2025
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