Chemistry
Which element does not have a neutron in its nucleus?
Hydrogen
Planes fly from a force generated by their wings. What is the name of this force?
Lift
Name the part of the lungs- small air spaces where gas exchange occurs.
alveoli
He invented numerous devices such as the gramophone, the cinematograph, and the lightbulb.
Thomas Edison
Which science is sometimes called ‘central science’?
Chemistry
What is the difference between CO and Co?
CO is a compound, Co is an element
Roughly how long does it take for the sun's light to reach Earth - 8 minutes, 8 hours, or 8 days?
8 minutes
How are bacteria kept out of your alimentary canal and lungs?
stomach acid, ciliated cells
Who discovered the link between germs and disease?
Pasteur
Lightning hotter than the surface of the sun: true or false?
True
Why noble gases are the happiest elements in the periodic table?
They have reached their full potential and achieved the maximum number of electrons.
One of your senses is useless in the vacuum of space. Which sense is it and why?
Hearing. There is no medium/air for the sound to travel through.
Which is the rarest blood type in humans?
AB negative
Who was the first woman to win a Nobel prize?
Marie Curie
DNA codes for proteins, which are the building blocks of organisms. What is the most abundant protein in the human body?
Collagen
The atomic number of the element is 18. Predict group number and period number.
Period - 3, Group - 8
Buoyancy prevents an object from ...
Sinking
Explain why enzymes are called biological catalysts.
Chemicals that speed up chemical reactions are catalysts, so enzymes are biological catalysts-catalysts made by living things.
Who is the author of “A Brief History of Time?”
Stephen Hawking
Name the 3 greenhouse gases
Carbon dioxide, methane, nitrous oxide
Which group of elements cannot exist alone hence they form diatomic molecules?
Halogens-Group VII
This planet in our solar system spins the slowest, completing one whole rotation in 243 Earth days. Which planet is it?
Venus
How does carbon monoxide affect the ability of blood to carry oxygen, and why is this harmful to our health, especially for smokers?
It binds tightly to red blood cells. Then they cannot carry so much oxygen. A smoker’s heart tries to compensate. It beats more quickly and pimps more blood around, increasing heart disease.
Who is the father of Modern Chemistry?
Antoine Lavoisier
How many bones do sharks have in their bodies?
Zero