What are the coefficient for the following reactions when it is properly
balanced?
___O2+___CH4----> CO2 + H2O
~ 2,1,1,2
Which of the following everyday substances does NOT typically contain an acid?
~ Soap
What type of reaction is the generic equation A+BC----> AC+B
~ Single disp...
Which of the following is considered a hypothesis (as opposed to an
observation)?
✓~ Birds can fly because they have hollow bones
Which of the following would be considered a theory?
✓~ Helium balloons float because helium is less dense than air.
Which of the statements below is NOT part of the scientific method?
✓~ All of the above steps are part of the scientific method.
Which statement about a hypothesis is TRUE?
✓~ All of the above statements are true.
Who discovered the law of conservation of mass?
, ✓~ Antoine Lavoisier
The distance between two hydrogen atoms in a molecule of water
0.0000000000172 m. Express this distance in scientific notation.
✓~ 1.72 x 10^-10 m
Which of the following would NOT be considered a correct conversion factor?
✓~ 1 pair of shoes = 1 shoe
In the number 48.93, which digit is estimated?
✓~ 3
The correct number of significant figures in the number 0.027090 is:
✓~ 5
The base SI unit for temperature is:
✓~ Kelvin
The correct scientific notation for the number 0.00050210 is:
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