Chemical Formulas
This is the chemical symbol for sodium.
What is Na?
This is the family of stable gases with 8 electrons in their outer shells.
What are Noble Gases?
These elements on the right side of the Periodic Table tend to gain electrons during chemical reactions.
What are nonmetals?
Who created the periodic table?
Mendeleev
This is the chemical symbol for hydrogen.
What is H?
An element tends to be stable when its outer shell is this.
What is full?
This Danish chemist proposed that in an atom's electrons orbit a central mass in the layers and that the electrons in the outermost layer are the key to how reactive an element is.
Who was Bohr?
What is a negative charge?
This is the chemical formula for ozone.
What is O3?
In the modern Periodic Table, elements are arranged according to this number.
What is atomic number?
This is the law that states that the mass of matter before and after a chemical reaction is equal.
What is the law of conservation of mass?
An electron has a __________ charge?
What is a negative charge?
Tis is what the chemical formula C12 H22 O11 means (sugar).
What is 12 atoms of carbon, 22 atoms of hydrogen and 11 atoms of oxygen?
This can give clues to some of an element's properties.
What is where it appears in the Periodic Table?
The most abundant element in the human body and in the Earth's crust is this.
What is oxygen?
A proton has a _______ charge?
What is positive?
What is the chemical formula for Na H C O3 means (baking soda).
What is the one atom of sodium, one atom of hydrogen, one atom of carbon and three atoms of oxygen?
Elements which are metals are on this side of the Periodic Table.
What is the left side?
This element makes up 78% of the mixture air.
What is nitrogen?
An electron cloud has this kind of charge.
What is negative?