Difficulty level:
Difficulty:
B2-C2
Theme:
Science
Date:
2026-07-26
Click on an empty cell for your first clue.
1
2
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19
ACROSS
1
to melt, to thaw (=to become a liquid)
5
speed of light 3 words
6
to accelerate, to speed up
8
iodine
9
foam
12
extinction (disappearance of a species)
14
molecule
15
crystal
18
potassium
19
to drain (=to remove liquid from)
DOWN
2
sodium
3
fluorine
4
nitrogen
5
time travel 3 words
7
empirical (based on experience)
10
explosion (bomb)
11
to inflate (=to fill with gas or air)
13
to drip (=to fall one drop at a time)
16
gene (biology)
17
gas (state of matter)
ACROSS
1
to melt, to thaw (=to become a liquid)
5
speed of light 3 words
6
to accelerate, to speed up
8
iodine
9
foam
12
extinction (disappearance of a species)
14
molecule
15
crystal
18
potassium
19
to drain (=to remove liquid from)
DOWN
2
sodium
3
fluorine
4
nitrogen
5
time travel 3 words
7
empirical (based on experience)
10
explosion (bomb)
11
to inflate (=to fill with gas or air)
13
to drip (=to fall one drop at a time)
16
gene (biology)
17
gas (state of matter)