Vocabulary
Key Concepts
Key Concepts 2
Sample Test Questions
What's up in Westfield?
100
The tiny pieces that all matter- all the stuff in the world- is made of
What is an atom?
100
During a chemical reactions atoms will not...
What is change from one type to another?
100
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
What is the properties will likely be different because the repeating groups of atoms that make up each sample are different.
100
This is the mystery reddish brown substance that was found in the water of Westfield.
What is rust (Iron Oxide)?
200
Things that are too small or too large to see can be studied with ________.
What are models?
200
Binx is not fat. He is _______ ____!!!!!
What is festively plump? 
200
Serena mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. She analyzed the results and found two ending substances. One of the ending substances was a white solid. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples Serena mixed together?
What is Sample D?
300
Substances have different properties because of these three reasons...
What is they vary in the type of atoms, the number or atoms, or molecular structure?
300
During a chemical reaction, atoms _______ to form different groups of atoms.
What is rearrange?
300
Which substance makes up the correct product for this chemical reaction?
What is C?
300
During a Chemical Reaction, atoms cannot be ______ or ________.
What is created or destroyed?
400
During a chemical reaction ____ of the atoms that make up the reactants rearrange to form the products (none, some, all)
What is ALL?
400
The diagram above shows the repeating groups of atoms that make up two samples. Both samples are green gases at room temperature. Will the other properties of the two samples be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
What is The other properties will be the same because the repeating groups of atoms that make up the two samples are the same?
400
These are the subtances that were resposible for rust fomring in the water of Westfield.
What are the pipes and fertilizer?
500
During a chemical reaction, one or more starting substances change into one or more _______ ________ (________).
What is different substances (products)?
500
A chemist mixed two substances together: a blue powder with no smell and a colorless liquid with a strong smell. Their repeating groups of atoms are shown above on the left. After they were mixed, the chemist analyzed the results and found two substances. One ending substance had the repeating group of atoms shown above on the right.
Is the ending substance the same substance as the blue powder? What happened to the atoms of the starting substances when the ending substances formed? Be sure to explain your answers to both of these questions.
What is The ending substance is a different substance than the blue powder. It must be a different substance because the ending substance has one atom from the colorless liquid and one atom from the blue powder. A chemical reaction occurred because the blue atom from the blue powder and yellow atom from the colorless liquid rearranged to form the repeating atom group of the ending substance. The green, red, and pink atoms must have combined with one another to form another atom group.
500
On your group paper, draw out the missing product from this reaction.
What is?