Elements are represented by a ________________?
Chemical symbol
Substance made up of only one kind of atom.
What is an element?
How many elements are in the compound NaClO?
3
The number of sodium atom in table salt.
What is 1 sodium atom?
True or False: All compounds are molecules.
What is true?
Calculate the molecular mass of carbon dioxide.
What is 44 g/mol?
What is the chemical symbol for Helium?
He
All matter in the universe can be described as this.
What is atoms or molecules?
The 3 in the chemical formula NaHCO3 means this.
What is three atoms of oxygen?
Who conducted the "Gold Foil Experiment"?
Who is Ernest Rutherford?
The period table is divided into three categories, name them
Metals, nonmetals and metalloids
The chemical formula for carbon dioxide.
What is CO2?
A solid material in which the component atoms are arranged in a definite pattern
What is a crystal?
This is how many groups are in the periodic table.
What is 18?
What is the name of this element?
What is Mercury?