What are elements made of?
How many types of atom does an element contain?
How many types of atom does a compound contain?
What is the basic structure of an atom?
What are atoms made of?
What kind of charge does an electron have?
What kind of electric charge does a neutron have?
What kind of electric charge do protons have?
What is an atomic number?
What is a mass number?
How are atoms arranged in the periodic table?
How are electrons arranged in an atom?
What determines the way an element reacts?
Why are the atoms of Group 0 elements so unreative?
What does the formula of a compound show?
What is formed when a metal reacts with a non metal?
What happens in ionic bonding?
What is covalent bonding?
Can we create new atoms?
What is a balanced equation?
How is the total mass of reactants related to the total mass of the product?