Vocabulary
Westfield Q's
Chemical Reactions
Chemical Reactions 2
Chemical Reactions 3
100
The tiny pieces that all matter is made of.
Atoms
100
What was the brown substance in the water in Westfield?
Rust
100
These substances will have __________ properties.
different
100
A starting substance of a Chemical Reaction
What is a REACTANT
100
The diagram shows the repeating groups of atoms that make up two samples. The properties will be ________ because ________.
different; the molecules are made of different types of atoms
200
Something that is all the same atoms or groups of atoms.
What is a SUBSTANCE
200
Could the rust have been created without fertilizer in Westfield's pipes?
No.
200
These substances have the exact same properties. True or False?
False
200
Can these reactants form this product?
no
200
In a balanced chemical equation, why must the number of atoms for each element be the same on both sides of the equation?
What is To satisfy the Law of Conservation of Mass, indicating that atoms are neither created nor destroyed in a chemical reaction.
300
A process in which atoms rearrange to form new substances
Chemical Reaction
300
What two substances created rust?
Fertilizer and Iron
300
A group of atoms joined together in a particular way.
What are MOLECULES
300
In the modern periodic table, elements are arranged according to their
What is ATOMIC NUMBER and ATOMIC MASS
300
Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?
C
400
An ending substance that is made during a chemical reaction.
Product
400
Why didn't the neighboring town have rust?
There was no fertilizer in the water.
400
What can cause an chemical reaction?
When molecules are able to combine using - liquid, heat, cold, or mixing
400
Can substances change into different substances?
yes, because atoms can be rearranged to form different substances
400
Which of the diagrams shows the repeating groups of atoms that make up the reactants?
A
500
Something that can be observed about a substance, such as color, smell or boiling point.
What is a PHYSICAL PROPERTY
500
How was rust created? Which atoms were involved?
A chemical reaction caused iron and oxygen to combine from the fertilizer running through the pipes
500
In this chemical equation, which are the products? 
Water and carbon dioxide
500
In the reaction shown, hydrogen and oxygen are the _______.
Reactants
500
Which of the diagrams to the right shows the repeating groups of atoms that make up the products?
c