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GCSE
Gcse Chemistry
Atomic Structure 2
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Q.1
Name the element that contains 12 protons, 12 electrons and 12 neutrons.
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Sodium
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Magnesium
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Potassium
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Aluminium
Q.2
There are two elements that are liquid at room temperature. They are...
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chlorine and mercury
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bromine and chlorine
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mercury and bromine
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mercury and phosphorus
Q.3
Chlorine has two isotopes, one with atomic mass 35 and one with atomic massPick the correct combination of subatomic particles for the two isotopes.
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Cl 35 - 17 Protons; 17 Neutrons; 18 Electrons Cl 37 - 20 Protons; 17 Neutrons; 17 Electrons
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Cl 35 - 17 Protons; 18 Neutrons; 17 Electrons Cl 37 - 17 Protons; 20 Neutrons; 17 Electrons
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Cl 35 - 18 Protons; 18 Neutrons; 17 Electrons Cl 37 - 17 Protons; 18 Neutrons; 20 Electrons
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Cl 35 - 17 Protons; 17 Neutrons; 18 Electrons Cl 37 - 17 Protons; 20 Neutrons; 20 Electrons
Q.4
Pick the correct symbol for the element with the mass number 84.
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Bromine
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Ar
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Kr
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Krypton
Q.5
An element has 45 electrons around its nucleus. The element is...
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rhodium
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ruthenium
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osmium
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iridium
Q.6
If the temperature is increased to 100°C, which element does NOT become a liquid?
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Potassium
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Gallium
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Phosphorus
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Lithium
Q.7
An element has 2 electron shells with 6 electrons in its outer shell. Which element is it?
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Oxygen
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Aluminium
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Boron
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Chlorine
Q.8
Pick the name for the element with 6 electrons.
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Carbon
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C
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Boron
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Nitrogen
Q.9
Pick the symbol pairs for elements that do NOT have the same number of neutrons in their nuclei.
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K and Ca
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Na and Mg
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F and Ne
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Li and Be
Q.10
An element has 3 electron shells with 3 electrons in the outer shell. Which element is it?
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Oxygen
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Aluminium
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Boron
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Chlorine
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