Vocabulary
Westfield Q's
Chemical Reactions
Random
Random #2
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
The temperature at which a substance changes from the solid phase to the liquid phase is
Melting point
100
Is the following chemical reaction balanced?
H2O + NH4 -----> NH2 + H2
No. The products are missing an O and 2H's
200
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
Model
200
Can rust be created without fertilizer?
No
200
These substances have the exact same properties. True or False?
False
200
What is a possible product these reactants can form?
red, orange
blue, black
red, black
blue, orange
200
During a chemical reaction, atoms cannot be ______ or ______.
Created or destroyed
300
A process in which atoms rearrange to form new substances
Chemical Reaction
300
What two substances created rust?
Fertilizer and Iron
300
During a chemical reaction, ______ of the atoms that make up the reactants rearrange to form the products.
All
300
A beginning substance or substances in a chemical reaction
Reactant
300
devorah is a food chemist, and she is developing a chemical to help foods stay fresh longer. She mixed a red liquid substance and a colorless solid substance together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.
After mixing, Devorah found two white substances in the sealed container. (Nothing had escaped.) 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
What other substance was found in Westfield's water?
Sodium nitrite (NaNO2) or
Potassium chromate (K2CrO4)
Sodium nitrite (NaNO2)
400
In the reaction shown, hydrogen and oxygen are the _______.
Reactants
400
Can substances change into different substances?
yes, because atoms can be rearranged to form different substances
400
Is the following chemical reaction balanced?
O2 + H2O + CO2 -----> H2 + O2 + O3
No. It is missing the C.
500
Something that can be observed about a substance, such as color, smell or boiling point.
Property
500
What was discovered in Westfield's well?
Fertilizer
500
In this chemical equation, which is one of the products? 
Water
Carbon Dioxide
500
What happens to the atoms of the reactants that create different substances in the products?
*to change the order or position of something
rearrange
500
Is the following chemical reaction balanced?
NH4 + CO2 -------> H2O + H2O + N + C
Yes.