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#1. Salt can kill some bacteria, but how does it work?
Salt can pull the water out of living cells, in a process called osmosis.
#2. The rain on Saturn might be made of what expensive material?
Scientists think that a combination of lightning and intense pressure could cause diamonds to rain down on large planets, including Saturn and Jupiter.
#3. Which scientist won 2 Nobel Prize awards and was also the mother of a Nobel Prize winner?
Marie Curie won 2 Nobel Prizes and was also the mother of Irène Joliot-Curie who also won a Nobel Prize.
#4. Which colour is usually on the outside of a rainbow?
Red light is on the outside of most rainbows. If you get a double rainbow though, the red will be on the inside of the second rainbow!
#5. What gas forms when you bake a cake, and helps make it rise to be light and fluffy?
Carbon dioxide is formed when baking soda (sodium bicarbonate) breaks down. It’s also produced by yeast in cinnamon rolls and other breads.
#6. How do diamond pythons kill their prey?
Diamond pythons are non-venomous, and they constrict their prey to kill them. They can’t kill you, but they will give you a nasty bite if you annoy them too much!
#7. Which of these acids gives vinegar its sour taste and pungent smell?
Acetic acid is also known as ethanoic acid.
#8. Do bats lay eggs?
Bats do not lay eggs.
#9. True or false? Black asphalt roads can’t be recycled.
False! Asphalt is one of the most recycled materials in the world, and a lot of new roads in Australia use a mixture of new and recycled materials.
#10. One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
The average adult human body contains about 250 grams of salt, roughly the weight of a block of butter. If you don’t have enough salt, your body suffers an electrolyte imbalance called hyponatremia.