Measurements
Measurement is something that...
includes some form of a unit
Name for columns...
Families
True or False coefficients of reactants and the products can represent #'s of atoms as well as the # of moles
TRUE
TRUE OR FALSE
All matter is NOT composed by atoms.
What Boyle's law?
The volume of a given amount of gas held at constant temperature is inversely proportional to the pressure under which it is measured.
Written unit for volume
Liter (L)
Horizontal grouped elements are...
Periods
What is a mole ratio?
A ratio between the number of moles of any two substances in a chemical reaction.
negative
A balloon has a volume of 2.5 L at 300 K. What is its volume at 450 K if pressure remains constant?
3.75L
Scientific Notation is...
shortened method of displaying very large numbers
Do periods have similar properties
NO
50 x 1 mol H2 SO4 /98.09g H2SO4
what is Daltons Theory?
elements are made of tiny particles
What happens to the volume of a gas when pressure increases at constant temperature?
The volume decreases because pressure and volume are inversely related.
How do you get Kelvin
273+Celsius
How many valence electrons do Halogens have?
7
How do you calculate percent yeild?
8
A diver rises too quickly from deep water. Which gas law helps explain why this is dangerous?
Boyle’s Law. As pressure decreases during ascent, gas volume increases, which can form dangerous bubbles in the body.
What is % error
Measured Value - Accepted Value divided by Accepted Value
How do you find Noble gases?
through Neon
How do you identify the limiting reactant?
First calculate the moles of each reactant, then divide the moles of each by its stoichiometric coefficient from the balanced equation.
What is 1 mole equivalent to
6.0221367 x 1023
Why are pressure cookers able to cook food faster?
Higher pressure raises the boiling point of water, allowing food to cook at higher temperatures.