How many times more powerful is your sense of smell in the morning?
What percentage of salt in seawater is sodium chloride?
What percentage of table salt is chlorine?
At what temperature does gold melt?
1064°C
1464°C
2064°C
1864°C
What percentage of Earth's atmosphere is nitrogen?
At what temperature does water reach its maximum density?
What percentage of the human body is water?
75-85%
45-55%
55-65%
60-70%
What temperature (in Celsius) is the center of the Earth?
7,000°C
4,000°C
5,000°C
6,000°C
What is the pH level of pure water?
How many chemical elements are required for life?
How many chemical reactions occur in your body every second?
Thousands
Trillions
Millions
Billions
What percentage of a cucumber is water?
What percentage of the universe is dark matter?
How many times can an aluminum can be recycled?
100 times
Forever
25 times
50 times
At what temperature (in Fahrenheit) does paper spontaneously combust?
451°F
351°F
551°F
651°F
What percentage of your brain is fat?
How many elements in the periodic table are naturally occurring?
How long does it take for plastic to decompose in a landfill?
Never fully decomposes
450 years
1000 years
100 years
How many atoms thick is a soap bubble wall?
3 atoms
5 atoms
1 atom
7 atoms
