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Atoms and Elements 4
Some elements are named after countries.

Atoms and Elements 4

This Science quiz is called 'Atoms and Elements 4' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. In Science, the periodic table contains about 118 elements so far, but this may very well increase if we discover more elements.

1.
The following elements are named after countries except .......
Fr
Ge
I
Po
Fr Francium - France, Po Polonium - Poland, Ge Germanium - Germany. There are several more!!
2.
The name of the element with the symbol Na is .......
napthalene
neon
nickel
sodium
3.
Which of the following is a halogen?
Argon
Fluorine
Helium
Neon
The halogens are in group 7
4.
The following elements are named after famous scientists except .......
curium
einsteinium
nobelium
uranium
Uranium was named after the planet Uranus
5.
In the periodic table, the elements are arranged in order of increasing .......
alphabetical symbol
electron number
mass number
proton number
6.
The name of a gas used in weather balloons is .......
chlorine
hydrogen
neon
nitrogen
Both hydrogen and helium are less dense than air. Helium is used in airships as it is unreactive and so safer than hydrogen (check out the Hindenburg disaster). Hydrogen, however, is still used in weather balloons as it is cheaper than helium.
7.
Li, Na, K and Cs are group 1 elements. The most reactive is .......
Cs
K
Li
Na
The elements in group 1 increase in reactivity as you go down the group
8.
A pure substance in which all of the atoms are identical is a description of .......
a compound
a mixture
an alloy
an element
9.
Lithium floats on water as it .......
is a non-metallic element
is a solid
is less dense than water
is more dense than water
Lithium is a metal in group 1
10.
The elements in group 7 of the periodic table are .......
conductors
gases
metals
non-metals
Group 7 is called the halogens
Author:  Sue Davison
Science: Middle School: Grades 6, 7 and 8 Play this quiz again

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