Atoms
Protons
What has a Positive charge?
What is the Periodic Table
A chart that shows all the elements scientist have discovered
Oxygen 47%, Silicon 28%, Aluminum 8%.
What is the crust?
What is like a recipe?
A chemical formula
What do symbols provide?
A shorthand way to write chemical formulas.
Electrons
What has a Negative charge?
What does an element's atomic number represent?
Th number of Protons in an element.
Oxygen 85%, Hydrogen 10%, Chlorine 2%.
What is the ocean?
What needs to occur in order for elements to form a compound?
A chemical reaction.
What is a chemical formula?
Is an expression of the types of and number of atoms in a substance.
Neutrons
What has a Neutral charge?
What do the colors on the Periodic Table show?
Weather the element is a solid, liquid, or gas.
Oxygen 65%, Carbon 18%, Hydrogen 10%.
What are living things?
What does a subscript tell you
The number of atoms of a particular element that are in a compound
Why do some chemical formulas use parentheses?
To clarify atomic composition.
What is the smallest charge?
Electrons
Why can't water be on the Periodic Table.
Because it is a compond.
Nitrogen 78%, Oxygen 21%, Others 1%.
What is atmosphere
If a compound has 2 atoms of aluminum (Al) and 3 atoms of oxygen (O), what would its chemical formula look like?
Al2O3
What does the number next to parentheses mean?
To multiply how ever many times what is in the parentheses.
What do atoms make up?
Everything.
How many elements are on the Periodic Table?
118
What are elements?
Substances which can't be broken down into anything simpler.
What can't you find compounds on the periodic table?
They are a mixture of more than one element.
How do you know it is a chemical formula not a element?
It will have more than one capital letter.