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WorksheetsQuiz #2 (Grade 8)
Total questions: 10
Worksheet time: 6mins
A German scientist that created a triad that was composed of a set of three elements that have similar properties.
Dobereiner
Seaborg
Mosely
Mendeleev
He proposed the modern periodic law which states that the elements should be arranged according to increasing atomic number.
Mendeleev
Mosely
Dobereiner
Seaborg
An English chemist who proposed the law of octaves.
Mendeleev
Meyer
Dobereiner
Newlands
A German Scientist who created the atomic volume curves.
Mendeleev
Meyer
Dobereiner
Newlands
Known as the father of the Periodic Table.
Mendeleev
Meyer
Dobereiner
Newlands
The atomic number is equivalent to the number of protons.
Ernest Rutherford
False
The number of protons is equivalent to the number of electrons.
True
False
The atomic mass of an element is equivalent to the number of protons and electrons.
True
False
The element Boron have an atomic number of 5. Therefore, the number of protons and electrons of Boron is also 5.
True
False
Helium has an atomic number of 2 and an atomic mass of 4. What will be the number of neutrons of Helium?
0
2
4
6
