Vocabulary
Law of Conservation of Matter
Properties
Chemical Reactions
"Kitchen sink"
100
The tiny pieces that all matter—all the stuff in the world—is made of.
Atoms
100
True or False: Atoms can change the type they are.
False
100
False
100
True or False: Bubbles are a sign of a chemical reaction.
True
100
Can substances change into different substances?
Yes
200
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
Model
200
The atoms on the reactant and products sides of a chemical reaction should be _____________.
equal or the same
200
True or False: Substances have different properties because they are made of different chemical formulas.
False-because they are made of different groups of atoms
200
When a chemical reaction occurs, atoms ___________.
Rearrange
200
True or False: When paper burns, atoms are destroyed.
False- they are rearranged to form new substances
300
An ending substance that is made during a chemical reaction.
Product
300
What is the mass of the baking soda?
20 g (must include units to get the points)
300
True or False: These substance have the same properties
False-they are made of different atoms
300
When heat is taken in by substances during a chemical reaction, what type of reaction is this?
Endothermic
300
(NH4)2SO4
How many atoms make up this substance?
15
400
Something that is made of all the same atoms or groups of atoms
Substance
400
Atoms cannot be ______________ or _______________
created, destroyed
400
If the properties of a substance change, this is evidence of what?
A chemical reaction
400
Is this chemical equation balanced?
4Al + 3O2 → 2Al2O3
Yes- there are 4 Al atoms and 6 O atoms on both the reactant and product sides of the equation
400
Freezing water to make ice is an example of an endothermic or exothermic reaction?
Exothermic
500
To change the order or position of something.
Rearrange
500
Who did we read about when we learned about the Law of Conservation of Matter?
Antoine Lavoisier
500
Give an example of the properties changing when only one substance is involved in a reaction.
Water or hydrogen peroxide (we looked at both)
500
A: Has all of the atoms that are needed to make the product
Note: there is another product that is not shown
500
Is this an accurate model of a chemical reaction?
Yes