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KS4 Elements & the Periodic Table Flashcards | StudBud
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KS4 Elements & the Periodic Table
KS4 Elements & the Periodic Table
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Questions
10
Answers
1
Different elements are made of different sized atoms.
False
True
2
Mendeleev left gaps in his periodic table because he predicted that new elements would be discovered.
False
True
3
How were the elements arranged in the Mendeleev's periodic table?
number of electrons
isotope number
releative atomic mass
atomic number
4
Why did the discovery of Gallium confirm Mendeleev's predictions?
similar properties to eka-aluminium
both are metals
one is metal and one is non-metal
similar properties to magnesium
5
The periodic table is made up of elements.
False
True
6
Why did Mendeleev swap the position of Iodine to be with fluorine, chlorine and bromine?
similar atomic mass
similar sounding name
similar chemical properties
similar physical properties
7
How did Mendeleev allow for elements that he thought would be discovered later?
he discovered new elements
he did more experiments
he left gaps in his periodic table
he changed his results
8
Chemical properties are related to the reactivity of elements.
False
True
9
How many groups of elements did Mendeleev's periodic table have?
8
7
6
5
10
Which 2 answers are physical properties of elements?
boiling point
reactivity
temperature
melting point
