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Test: Atoms, Elements and Compounds - Year 3 MCQ


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10 Questions MCQ Test - Test: Atoms, Elements and Compounds

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Test: Atoms, Elements and Compounds - Question 1

Electrons are found...

Detailed Solution for Test: Atoms, Elements and Compounds - Question 1
Electrons have one unit of negative charge
Test: Atoms, Elements and Compounds - Question 2

What is the maximum number of electrons in the first shell?

Detailed Solution for Test: Atoms, Elements and Compounds - Question 2
It is the shell that is closest to the nucleus
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Test: Atoms, Elements and Compounds - Question 3

What is the maximum number of electrons in the second shell?

Detailed Solution for Test: Atoms, Elements and Compounds - Question 3
At GCSE you will have to know the electron configurations up to and including calcium, but no further
Test: Atoms, Elements and Compounds - Question 4
What is the electron configuration of the element lithium?
Detailed Solution for Test: Atoms, Elements and Compounds - Question 4
Lithium has atomic number 3 which tells you that there are 3 electrons in the shells. Placing two in the first shell leaves you with just 1 in the outer shell
Test: Atoms, Elements and Compounds - Question 5
Which element has the electron configuration 2,4?
Detailed Solution for Test: Atoms, Elements and Compounds - Question 5
2,4 = 6 electrons therefore 6 protons meaning the element has atomic number 6 which corresponds to carbon
Test: Atoms, Elements and Compounds - Question 6
Which element has the electron configuration 2,8,7?
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Using similar logic to the previous question leads you to the element whose atomic number is 17
Test: Atoms, Elements and Compounds - Question 7
Which of the following is NOT an electron configuration for an element in group 8 (also called group 0, Group 18 or the noble gases)?
Detailed Solution for Test: Atoms, Elements and Compounds - Question 7
Group 8 elements all have full outer shells
Test: Atoms, Elements and Compounds - Question 8

What is the smallest unit of an element that retains the properties of that element?

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An atom is the smallest unit of an element that retains its chemical properties.

Test: Atoms, Elements and Compounds - Question 9

Which of the following is NOT an example of an element? 

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Water (H2O) is a compound made up of hydrogen and oxygen, not a single element.

Test: Atoms, Elements and Compounds - Question 10

Which of these statements about molecules and compounds is true?

Detailed Solution for Test: Atoms, Elements and Compounds - Question 10

All compounds are molecules, but not all molecules are compounds.

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