This acid is found in lemons.
What is citric acid?
He created the modern periodic table.
Who is Mendeleev?
The positive part of an atom.
What is the proton?
This planet orbits the Sun the fastest.
What is Mercury?
The color of chlorophyll.
What is green?
The name of rain with a low pH.
What is acid rain?
The percentage of the atmosphere that is oxygen.
What is 21?
Two or more atoms joined together makes this.
What is a molecule?
The Richter scale measures this.
What is Earthquake magnitude?
Your body makes this vitamin when you are exposed to sunlight.
What is vitamin D?
This purple fruit can be made into an indicator.
What is a blueberry?
This element has the lowest boiling point.
What is helium?
The loss of an electron turns an atom into this.
What is an ion?
The length of time it takes sunlight to reach the Earth.
What is 8 minutes?
This is the smallest marine mammal.
What is the sea otter.
Adding an acid to a base will make these two.
What are water and salt?
The chemical symbol for tin.
What is Sn?
Who is Bohr?
The first human in space.
Who is Yuri Gagarin?
The average adult human 32 of these.
What are teeth?
This helps to maintain a constant pH.
What is a buffer?
Coal is mainly made up of this element.
What is carbon?
The process for splitting the atom.
What is fission?
1 astronomical unit is equal to this.
What is the distance between the Earth and the Sun?
The Portuguese Man-of-War is a type of this.
What is jellyfish?