Vocabulary
The smallest particle of an element
What is an atom?
This is the chemical symbol for krypton.
What is Kr?
Which two elements are the most common in the lithosphere?
What are oxygen and silicon?
C6H12O6 is glucose. How many elements are in this compound?
What is three?
Compound
A _____ consists of atoms of different kinds of elements that are bound together and are pure substances represented by a chemical formula.
What is a compound?
This is the atomic number of sodium.
What is 11?
These two elements make up the hydrosphere.
What are hydrogen and oxygen?
H2O is water. How many elements are in this compound?
What is two?
This is the chemical symbol for arsenic.
What is As?
The Periodic Table is a listing of all of the ______
What are elements?
This is the chemical symbol for oxygen.
What is O?
Earth's atmosphere is mainly composed of these two elements.
What are nitrogen and oxygen?
CO2 is carbon dioxide. How many elements are in this compound?
What are two?
Which is a compound: He, Co, CO, Si.
What is CO?
Each element is represented by a ______ ______ that consists of one to two letters.
What is a chemical symbol?
This is the chemical symbol for iron.
What is Fe?
All living things on Earth have this element in them.
What is carbon?
The chemical formula for caffeine is C7H5NO3S. How many elements are in this compound?
What are 5?
Which element's chemical symbol is He?
What is helium?
This is the rigid, outer part of Earth.
What is the lithosphere?
This is the first element in the Periodic Table.
What is hydrogen?
This element is the most abundant on Earth.
What is oxygen?
How can we tell a compound from an element?
An element is represented by a chemical symbol, which is one capital letter or one capital letter followed by a lower case letter. Compounds are combinations of elements that are represented by a chemical formula.
This is the chemical formula for table salt.
What is NaCl?