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Radioactivity

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Key words for the year 11 topic on Radioactivity.

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Crossword clues

Solve these clues to fill the grid.

A soft heavy toxic malleable metallic element
1 Across
A material made of cellulose pulp derived mainly from wood or rags or certain grasses
3 Across
Serious disease where cells grow out of control
4 Across
The 2nd letter of the Greek alphabet
8 Across
The time required for something to fall to ___ its initial value
10 Across
The vast area beyond Earth's atmosphere
13 Across
The part of a scene that lies behind objects in the foreground
14 Across
The smallest component of an element having the chemical properties of the element
16 Across
The 1st letter of the Greek ___
2 Down
Center of an atom or a cell
5 Down
Hard piece of stone (plural)
6 Down
A structure that has a roof and walls and stands more or less permanently in one place (plural)
7 Down
An investigator who is employed to find missing persons or missing goods
9 Down
The organic phenomenon of rotting
11 Down
A unit of magnetic field strength equal to one-hundred-thousandth of an oersted
12 Down
A piece of thin and flexible sheet metal
15 Down

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