Difficulty level:
Difficulty:
B2-C2
Theme:
Science
Date:
2026-09-05
Click on an empty cell for your first clue.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
ACROSS
1
chlorine
4
moldy, mouldy (covered with mold)
7
to poison
11
crystal
12
to rot (=to suffer decomposition due to biological action)
16
light bulb
17
gene (biology)
18
nitrogen
19
foam
20
fluorine
DOWN
2
reversible (can be undone)
3
genetics
5
blackout, power outage
6
reflex (automatic response to a stimulus)
8
to inflate (=to fill with gas or air)
9
lubricant
10
to experiment
13
platinum
14
to plug in (=to connect an electrical device)
15
magnet
ACROSS
1
chlorine
4
moldy, mouldy (covered with mold)
7
to poison
11
crystal
12
to rot (=to suffer decomposition due to biological action)
16
light bulb
17
gene (biology)
18
nitrogen
19
foam
20
fluorine
DOWN
2
reversible (can be undone)
3
genetics
5
blackout, power outage
6
reflex (automatic response to a stimulus)
8
to inflate (=to fill with gas or air)
9
lubricant
10
to experiment
13
platinum
14
to plug in (=to connect an electrical device)
15
magnet