Vocabulary
IA Prep
Chemical Reactions
Random
A+
100
The tiny pieces that all matter is made of.
Atoms
100
The molecules in a solid have a _________attraction.
STRONGER
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
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
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
Model
200
In a scientific model, an arrow would indicate energy transfer. If an arrow is pointing away from an object, the energy is transferring in or out of the object? Therefore the object would be cooler or hotter?
Out - Cooler
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
The total number of _______ remains the same in a chemical reaction.
Atoms
300
Evidence(s) that a chemical reaction occurred is(are)
color, smell or boiling point.
300
During a chemical reaction, ______ of the atoms that make up the reactants rearrange to form the products.
All
300
Mrs. Carroll 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, Mrs. Carroll 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
Does the mass of a substance change during a chemical reaction?
NO, mass would stay the same whether a chemical reaction occurred or not.
400
What happens during a chemical reaction?
The atoms are not created nor destroyed, just rearranged.
400
Can substances change into different substances?
yes, because atoms can be rearranged to form different substances
400
Mr. Cosgrove mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. He analyzed the results and found two ending substances. One of the ending substances (shown in diagram) was a white solid, made up of the repeating group of atoms shown above.
Which of the diagrams shows the repeating groups of atoms that make up the reactants?
D
500
Something that can be observed about a substance, such as color, smell or boiling point.
Property
500
How do the molecules in a solid, liquid, and gas move? Make sure to label each phase and what the molecules are doing.
Solid - Move in place (vibrate)
Liquid - Move around one another
Gas - Move freely or away from one another
500
In this chemical equation, which is one of the products? 
Water
Carbon Dioxide
500
In the reaction shown, hydrogen and oxygen are the _______.
Reactants
500
Ms. Weidner is a chemist who is making a chemical to add to swimming pools in order to make the water safer. She mixed two solid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Ms. Weidner found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the right shows the repeating groups of atoms that make up the products?
c