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Questions and Answers
What is the basis for the structure of the periodic table?
What is the basis for the structure of the periodic table?
- The number of electrons in the elements
- The atomic mass of the elements
- The properties of the elements
- The number of protons in the elements (correct)
Which group of elements is exemplified by groups 1, 2, and 13-18?
Which group of elements is exemplified by groups 1, 2, and 13-18?
- Halogens
- Transition metals
- Alkali metals (correct)
- Noble gases
Which trend in the periodic table refers to the energy required to remove an electron from an atom?
Which trend in the periodic table refers to the energy required to remove an electron from an atom?
- Ionic radii
- 1st ionisation energy (correct)
- Atomic radii
- Valencies
What are the main trends shown by elements across periods and down groups in the periodic table?
What are the main trends shown by elements across periods and down groups in the periodic table?
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How is the structure of the periodic table based?
How is the structure of the periodic table based?
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Which groups and period are used as examples to exemplify the trends in the periodic table?
Which groups and period are used as examples to exemplify the trends in the periodic table?
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What is the definition of half-life nuclear decay?
What is the definition of half-life nuclear decay?
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What is the difference between heterogenous and homogenous mixtures?
What is the difference between heterogenous and homogenous mixtures?
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What are the three aspects in which Biofuels differ from Fossil fuels?
What are the three aspects in which Biofuels differ from Fossil fuels?
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