Chem Flashcards
(30 cards)
1
Q
what is an ‘atomic number’?
A
the symbol showing the number of protons and electrons in an atom
2
Q
what is a ‘mass number’?
A
the symbol showing the mass of an atom/ it’s protons and neutrons combined
3
Q
H
A
hydrogen
4
Q
Li
A
lithium
5
Q
Be
A
beryllium
6
Q
Na
A
sodium
7
Q
Mg
A
magnesium
8
Q
K
A
potassium
9
Q
Ca
A
calcium
10
Q
He
A
helium
11
Q
B
A
boron
12
Q
C
A
carbon
13
Q
N
A
nitrogen
14
Q
O
A
oxygen
15
Q
F
A
fluoride
16
Q
Ne
A
neon
17
Q
Al
A
aluminium
18
Q
Si
A
silicon
19
Q
P
A
phosphorus
20
Q
S
A
sulfur
21
Q
Cl
A
chlorine
22
Q
Ar
A
argon
23
Q
Fe
A
iron
24
Q
Zn
A
zinc
25
Cu
copper
26
Ag
silver
27
Pb
led
28
Au
gold
29
a species of an atom having the same number of protons in their atomic nuclei.
element
30
a thing that is composed of two or more separate elements;
a compound
