Show:
Chemical Reactions
Physical and Chemical Properties
Conservation of Mass
Phase Change and State of Matter
Holiday Questions
100
What are reactants and products?
Reactants: Chemicals that are changing identity. Products: Resulting chemicals after the reaction.
100
What is the difference between a physical change and a chemical change?
Chemical change: Changes substances identity Physical change: only changes physical properties.
100
How many hydrogen atoms does H2O have?
2
100
Compare the molecules in a solid, liquid, and a gas.
Solid: Least amount of movement. Liquid: moderate movement. Gas: Lots of movement.
100
What color is Santa's robe?
Red
200
Boiling water is a phase change.
True
200
Name 5 physical properties.
Answers may vary
200
Na2O4H ------> CO2 + Ma3 This equation is balanced.
False
200
Define Condensation
The phase change when a gas becomes a liquid.
200
How many days of Hanukkah are there?
8
300
Define an endothermic reaction and give an example.
Energy is absorbed. Baking soda and vinegar.
300
What type of property is flammability?
Chemical
300
In a chemical reaction, the atoms on both sides are always _______________.
Balanced.
300
Define Vaporization
The phase change where liquid becomes a gas once it reaches it's boiling point.
300
What is one thing that you are going to do over the break?
Answer may vary
400
Define an exothermic reaction and give an example.
Releases energy. Paper being burned.
400
What is a physical property?
Something that can be measured or observed without changing its identity.
400
State the Law of Conservation of Mass
Matter can be neither created nor destroyed.
400
Temperature and Heat are the same thing.
False.
400
What region celebrates "Yule"?
Northern Europe / Scandinavian countries
500
Name a chemical reaction that was done in lab.
Answers may vary
500
What is a chemical property?
A property that can only be measured when something is changing identity.
500
What is the difference between an open and closed system?
Answer may vary.
500
Things that go through a phase change always go through a chemical change.
False.
500
Name each of the reindeer.
Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, and Blitzen