Elements
What is the chart listing all the elements?
What is the periodic table
Least common element in the periodic table.
What is astatine
What's is it called when 2 atoms are joined together?
What is a molecule
Common in every atom of the same element?
What is the number of protons
Compound definition
What is 2 or more atoms combined
Made up of one kind of atom?
What is an element
Most dangerous element in the periodic table.
What is plutonium
Definition of Molecule?
What is 2 or more atoms combined together
Number of protons in hydrogen?
What is 1
What does the 2 mean in H2O
What is 2 hydrogen atoms
O is the chemical symbol for this element?
What is oxygen
Who invented the periodic table?
Who is Dmitri Mendeleev
All matter in the universe?
What is an atom or molecule
Center of an atom?
What is a neucleus
Chemical formula of salt?
What is NaCI
Number of electrons in oxygen?
What is 8
Number of elements in periodic table?
What is 118
What molecule is water?
What is H2O
What is a particle with a neutral charge?
What is a neutron
Symbol for methane?
What is CH4
The most common element?
Hydrogen
How many groups are in the periodic table?
What is 18
How many hydrogens are there in H2O?
What is 2
What are atoms made of?
What is proton, neutron, and electron
Symbol for water?
What is H2O