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1st SW #1 Elements
Contribué par: Ruble
1.
CALCIUM
C
Ca
Cu
Cl
2. 
COPPER
C
Ca
Cu
 Cl
3.
BORON
B
Be
Bo
Br
4.
FLUORINE
F
Fl
Flu
 Fe
5. 
NEON
N
Ne
No
 Nn
6.
An element is a 
Mixture
Pure substance
7.Elements are represented by a chemical symbol.Symbols are written with:
all lower case letters
 all capital letters
always only one letter
The first letter (of one or two letters) is capitalized
8. 
What is the chemical symbol for Iron?
 IR
Ir
Fe
FE
9.
Which of the following is NOT an example of a correctly
written chemical symbol for an element?
 H
Au
Ag
FE
10.Which of the following pictures looks like the structure of an element?
A
C
B
 D
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