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
94%
1%
1%
2%
79
flagItaly
91%
3%
3%
2%
89
flagthe United Arab Emirates
90%
4%
2%
2%
70
flagSwitzerland
86%
5%
0%
7%
38
flagthe Netherlands
83%
7%
3%
6%
127
flagGreece
80%
7%
9%
2%
41
flagGermany
73%
9%
5%
9%
349
flagFrance
73%
10%
5%
10%
56
flagthe United Kingdom
72%
10%
6%
9%
851
flagPoland
65%
12%
9%
12%
24900
flagPakistan
65%
12%
9%
11%
63
flagSweden
65%
5%
12%
17%
40
flagthe Philippines
64%
9%
7%
18%
54
flagAustralia
63%
15%
8%
10%
60
flagNorway
63%
14%
9%
12%
55
flagthe United States
60%
14%
8%
14%
1065
flagRepublic of Ireland
58%
20%
4%
17%
75
flagCanada
57%
12%
11%
17%
70
flagUnknown
55%
11%
14%
18%
1608
flagIndia
53%
14%
10%
19%
537

Gender

men65%
women67%
heavy water has greater density
65%
67%
heavy water is radioactive
11%
9%
heavy water is not translucent
9%
9%
heavy water conducts electricity
13%
13%

Language versions

question
answers
results
flag
What is the only physical difference between heavy water and pure water?
2586
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.