Biology - Atoms
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This is MCQs of Biology
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Question 1 of 28
1. Question
The smallest unit of an element that retains all the properties of the elements is?
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Question 2 of 28
2. Question
In atoms, protons and neutrons are present:
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Question 3 of 28
3. Question
What is the purest form of matter that can not be separated into different substances by chemical means?
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Question 4 of 28
4. Question
When an atom ionizes, what happens?
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Question 5 of 28
5. Question
Which of the following statements is not true?
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Question 6 of 28
6. Question
Which of these particles determine the chemical properties of an atom?
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Question 7 of 28
7. Question
Electrons carry ___________ charge:
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Question 8 of 28
8. Question
The electrons of an atoms;s outermost shell are called its __________ electrons:
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Question 9 of 28
9. Question
Which of the following is the smallest in volume?
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Question 10 of 28
10. Question
Which of the following applies to a neutron?
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Question 11 of 28
11. Question
Changing the number of ________ would change it into an atom of a different element:
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Question 12 of 28
12. Question
The reason liquid nitrogen evaporates so easily is that it lacks:
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Question 13 of 28
13. Question
When an atom gives up an electron and acquires a positive charge, it is called a /an:
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Question 14 of 28
14. Question
The number and arrangement of electrons in atom’s outer energy level determines the atom’s:
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Question 15 of 28
15. Question
Atoms of different phosphorus isotopes:
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Question 16 of 28
16. Question
An atom that normally has ________ in its outer shell would tend not to form chemical bonds with other atoms:
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Question 17 of 28
17. Question
The orbits comprising an atom’s valence electron shell:
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Question 18 of 28
18. Question
A suphur atom has 6 electrons in its outer shell as a result: it forms ________ covalent bonds with other atoms:
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Question 19 of 28
19. Question
An ion is formed when an atom:
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Question 20 of 28
20. Question
Whic of the following substances does not play a role in normal human physiology?
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Question 21 of 28
21. Question
The ionization of a sodium atom to produce Na+ is an example of:
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Question 22 of 28
22. Question
Which of the following is a trace element required only in small amounts by most living things:
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Question 23 of 28
23. Question
Your body contains the smallest amount of which of the following:
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Question 24 of 28
24. Question
Role of molybdenum is:
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Question 25 of 28
25. Question
Isotopes of an element differ from each other in the number of :
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Question 26 of 28
26. Question
Which of the following facts allows you to determine that atom A and atom B are isotopes of the same element?
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Question 27 of 28
27. Question
Which of the following elements is mismatched with its properties or function?
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Question 28 of 28
28. Question
Sodium and potassium behave similarly in chemical reactions. This is because:
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