What is the only physical difference between heavy water and pure water?

heavy water has greater density
heavy water is radioactive
heavy water is not translucent
heavy water conducts electricity
Heavy water contains deu­teri­um instead of common hy­dro­gen-1. In its pure form it has a density about 11% greater than water, but oth­er­wise, it is phys­i­cal­ly and chem­i­cal­ly similar. It is not ra­dioac­tive. Because of greater density and stronger hy­dro­gen-oxy­gen bonds, its behavior is slightly dif­fer­ent in some bio­chem­i­cal re­ac­tion­s. It may be toxic, but only when a large fraction of water (> 50%) in higher or­gan­isms is replaced by heavy water.

Answers distribution

heavy water has greater density
heavy water is radioactive
heavy water is not translucent
heavy water conducts electricity
answers
flagFinland
95%
1%
0%
3%
63
flagItaly
90%
4%
2%
2%
72
flagthe United Arab Emirates
84%
6%
4%
4%
44
flagthe Netherlands
77%
11%
3%
7%
63
flagGreece
77%
13%
9%
0%
22
flagFrance
75%
12%
2%
10%
48
flagMalaysia
75%
8%
8%
8%
24
flagGermany
72%
9%
5%
10%
259
flagthe United Kingdom
69%
12%
6%
10%
606
flagAustralia
67%
8%
10%
10%
49
flagthe Philippines
67%
10%
5%
16%
37
flagPoland
65%
13%
8%
11%
16220
flagNorway
65%
10%
8%
15%
46
flagUnknown
63%
13%
5%
15%
138
flagPakistan
61%
14%
12%
10%
47
flagCzech Republic
61%
19%
0%
19%
21
flagthe United States
59%
15%
8%
14%
980
flagRepublic of Ireland
57%
18%
5%
18%
54
flagIndia
55%
12%
10%
19%
449
flagCanada
52%
14%
10%
20%
55

Gender

men69%
women66%
heavy water has greater density
69%
66%
heavy water is radioactive
12%
11%
heavy water is not translucent
6%
9%
heavy water conducts electricity
10%
13%

Language versions

question
answers
results
flag
What is the only physical difference between heavy water and pure water?
2217
57%

Details

Author: globalquiz.org
Illustration: Jinx!
tools
Should this question be improved? Improve it.
Globalquiz questions are translated by users for other users. Translate this question.