Law of Conservation of Matter
The law of conservation of mass states that mass is not created or destroyed during a reaction, the atoms just get ________.
rearranged
Acids tend to taste ______.
Sour
Bases tend to taste _______.
Bitter
When acids and bases reaction, a ________ reaction occurs.
neutralization
A _______ reaction will cause a thermometer to read higher as energy is released.
exothermic
The materials that start a chemical reaction are called ______.
reactants
Name one substance from our lab activity that was acidic.
Bases tend to feel ______.
Slippery/Soapy
A tums tablet will do what to the pH value of your stomach.
Increase it
The pH scale ranges from ____ to _____.
0, 14
The ending materials of a chemical reaction are called ______.
Products
0
What pH value would the strongest base be?
14
strength
What would be a likely pH value for drain cleaner?
12-14
How many products are generated during this reaction? NaHCO3 + C2H4O2 --> NaC2H3O2 + CO2 +H2O
3
The weakest acid would be what value on the pH scale?
6
What color would the strongest base turn pH paper?
Dark Blue/Purple
How will and ENDOthermic reaction affect a thermometer reading?
get lower
Some nails are sealed into a ziploc bag with some oxygen and water. As the nails rust, how will the mass of the bag and its contents be affected?
remains the same because the bag is sealed
How many reactants are involved in this reaction? NaHCO3 + C2H4O2 --> NaC2H3O2 + CO2 +H2O
2
What color would indicator paper turn in the presence of a strong acid?
Red
Name one substance that was a base in our lab activity.
various answers
Acids produce what type of ion when reacting with water?
Hydrogen
Bases produce what type of ion when reacting with water?
Hydroxide OH