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WorksheetsTALK ABOUT ELEMENTS
Total questions: 25
Worksheet time: 6mins
(a) is a pure substance that is made from a single type of atom.
What is the first element?
(a)
It is the number of protons in each atom.
(a)
The atomic number doesn’t corresponds to the number of protons.
True
False
There are currently 108 known elements.
True
False
An important number in an element is the atomic number.
True
False
This are the building blocks for all the rest of the matter in the world.
(a)
How many elements are naturally though to exist on earth?
(a)
Atomic Number of Nihonium (symbol Nh)
(a)
Symbol for Atomic Number 118
(a)
Elements found on Earth and (a) are exactly the same.
Most common element found on earth.
Hydrogen
Helium
Second common element on earth.
Helium
Hydrogen
Isotopes are atoms of the same element, with same numbers of neutrons.
True
False
What are the four elements during ancient times?
Rare element on earth.
(a)
Atomic weight of Hydrogen
1.0018
1.008
1.0008
1.008
Symbol for Hassium
(a)
Symbol for Uranium
(a)
Symbol for Mercury
(a)
This element has 79 protons
(a)
Symbol for Iodine
(a)
What element has a symbol of Na?
(a)
Which is not an element?
Tc
Pd
Xe
Ex
Which is not an element?
Hf
Ty
Tl
At
