Chemical Reactions
Double Points!
Balance The Equation - P4 + Br -----> PBr2
What is 1,4,4
Who created the Periodic Table?
What is Dmitri Mendeleev
Vaporization
How many feet are in 2 miles?
10,560
In a study examining how sleep affects test scores, what does the sleep represent?
Independent Variable
What is the total number of elements?
AgI + Na2S ----> Ag2S +NaI
What is the atomic symbol for gold?
Au
Burning wood is an example of what type of change.
Water freezes at what temperature? (Both F and C)
32F and 0C
Double Points!
What is the difference between a control group and a constant?
A constant consists of the same throughout the experiment. A control is used for comparison and doesn't receive anything.
Balance the Equation
C3H8 + O2 -------> H2O + CO2
What is 1,5,4,3
Double Points!
What is the difference between metals and nonmetals?
When metals are shiny, malleable, and useful, when it comes to heat. Nonmetals are dull and brittle.
How tightly particles are packed determines what ______ it takes.
state
Convert 21km to ______m
21,000
Would it be better to have more or fewer tests for an experiment?
More
Balance the equation -
CaCl2 + Na3PO4 -----> Ca3(PO4)2 + NaCl
3,2,1,6
What element has the atomic mass of 4?
Helium
Heating doesn't cause particles to move around _____.
Double Points!
How many kilometers are in 10 million millimeters?
In a study on how different amounts of exercise affect heart rate, what variable does the exercise represent?
Independent Variable
Count the total amount of atoms on both sides -
2KMnO4 + 10FeSO4 + 8H2SO4 ----> 2MnSO4 + 5Fe2(SO4)3 + K2SO4 + 8H2O
256
What element is radioactive, a symbol of U, and has an atomic number 92?
Uranium
What is the difference between the boiling and freezing point of water?
180
How many feet are in 84 yards?
252
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