Chemical acrostic no. 20
£50 of tokens to be won
Puzzles
Students are invited to solve InfoChem’s acrostic puzzle contributed
by Simon Cotton. Your task is to complete the grid by answering the
nine clues on the earth’s crust and atmosphere to find the answer in
the shaded box, which is an important metal ore.
Prize wordsearch no. 57
Find the 31 words/expressions associated with valency hidden in this
grid contributed by Bert Neary. Words read in any direction, but are
always in a straight line. Some letters may be used more than once.
When all the words are found, the unused letters, read in order, will spell
a further 9-letter word.
Please send your answers to the editor at the usual address to arrive no
later than Monday 11 July. First correct answer out of the editor’s hat will
receive a £25 Amazon gift voucher.
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P
ANIONS
ATOMS
BALANCE CHARGES
BENZENE
BOND
BRACKETS
BRIDGING BONDS
CATIONS
CHARGE NUMBER
CLASSICAL VALENCY
COMBINE
CORRELATION
COVALENCY
DOUBLE BOND
ETHANE
FORMULA
FRACTIONAL BONDS
FRAMEWORK
GRAPHITE
HALF BONDS
HYDROGEN ATOMS
IONS
1. Essential process in the carbon cycle.
2. Abundant metallic element, essential in the structure of the human body.
3. Life-giving element in the atmosphere.
4. Most abundant metal in the Earth’s crust; marathon runners sometimes
cover themselves in sheets of it to keep warm.
5. Element found in all fossil fuels.
6. A little of this is good for plants, but too much can be bad for rivers.
7. Second most abundant metal in Earth’s crust; found in our red blood cells.
8. If a mineral fizzes when acid is added to it, then it is probably a ______ .
9. The Earth’s gravity cannot hold onto this, so there is none of it in the
atmosphere.
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9
Please send your answers to: the editor, Education in Chemistry,
Royal Society of Chemistry, Thomas Graham House, Cambridge
CB4 0WF, to arrive no later than Monday 11 July. First out of the
editor’s hat to have correctly completed the grid will receive a £25
Amazon gift voucher.
NON INTEGRAL BONDS
NON MOLECULAR
OXIDE
OXYGEN
PERIODIC TABLE
SELENIUM
SELENIUM DIOXIDE
SILICON
THEORY OF VALENCY
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Chemical
acrostic no. 19
solutions and
winner
M
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L
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The winner was
Max Haughey from
Burgate School and
Sixth Form Centre.
A
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R
May prize wordsearch no. 56 winner
The winner was Paul Hutchinson from Netherhall School. The 8-letter word was FELDSPAR
Name
School name
School address
Your email
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