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First 20 elements Flashcards | StudBud
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First 20 elements
First 20 elements
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Year 11 Chemistry: first 20 elements
Flashcards
10 cards
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Practice quiz
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Questions
10
Answers
1
Which chemical symbol represents sodium?
Na
So
N
S
2
Which has the smallest relative mass?
They are all the same
Protons
Electrons
Neutrons
3
What is Boron's atomic number?
5
12
4
3
4
What element is this?
Beryllium
Silicon
Sodium
Sulfur
5
What is the 20th element?
Cl
P
Ar
Ca
6
C is the chemical symbol for:
Chlorine
Silicon
Carbon
Calcium
7
Which of the following elements has the greatest mass number?
Sulfur
Potassium
Hydrogen
Aluminium
8
What does the number '12' represent?
Number of Neutrons
Number of Protons
Number of Electrons
Na is the 12th element
9
What is the chemical symbol for magnesium?
Mo
Mg
Mn
Ma
10
How many electrons does this atom have?
15
31
30
12
