Difficulty level:
Difficulty:
B2-C2
Theme:
Science
Date:
2021-10-18
Click on an empty cell for your first clue.
1
2
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5
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7
8
9
10
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13
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19
20
ACROSS
1
bubble
3
empirical (based on experience)
7
light bulb
10
uranium
11
rust
12
foam
17
theory
18
to recharge, to charge up (an electric battery)
19
sulfur, sulphur
20
fluoride
DOWN
2
helium
3
to experiment
4
magnet
5
ornithology
6
fluorine
8
phosphorus
9
to drip (to fall one drop at a time)
13
plutonium
14
battery (electric)
15
iodine
16
chromium
ACROSS
1
bubble
3
empirical (based on experience)
7
light bulb
10
uranium
11
rust
12
foam
17
theory
18
to recharge, to charge up (an electric battery)
19
sulfur, sulphur
20
fluoride
DOWN
2
helium
3
to experiment
4
magnet
5
ornithology
6
fluorine
8
phosphorus
9
to drip (to fall one drop at a time)
13
plutonium
14
battery (electric)
15
iodine
16
chromium