Density/Units of Measurement
What is the density equation? What is the UNIT for EACH variable?
d = m/v
d = g/mL OR g/cm3
m = g
v = cm3 or mL
What is the Law of Conservation of Energy?
Energy cannot be created nor destroyed only transformed from one form to another.
What is the unit cancellation rule?
Units have to be the same and on opposing sides of the fraction line (1 numerator & 1 denominator).
Separation techniques take advantage of __________________________ properties.
physical
1 L = _____________________ mL
1000 L
Give a type of potential and kinetic energy.
Potential: chemical, nuclear, gravitational, elastic
Kinetic: thermal, sound, electromagnetic
If you were to throw 4 darts and all of them hit the target. Would you be accurate, precise, or both?
Accurate AND precise
What are the two types of mixtures you can study? What are the two types of pure substances you can study in Chemistry?
Mixtures: homogenous, heterogenous
Pure Substances: elements, compounds
How are moles of a substance compared to particles of a substance?
Avogadro's number (6.02 * 1023)
In the calorimeter experiment... HOW was energy transferred?
The energy from the food was transferred into the water, which increased the energy of the water and therefore the temperature.
How many significant figures are in the following number?
0.0076450
Convert the number to scientific notation!
5 Sig Figs
7.65 * 10-3
DOUBLE JEOPARDY!!
Density is considered an _________________________ property; whereas mass is considered an ___________________________ property.
intensive; extensive
A cup of tea is sitting at 72°C. What is the temperature of this tea in K?
345.15 K
Give an example (scenario) for the 3 modes of heat transfer (conduction, convection, radiation).
Conduction: particles colliding when a match is lit
Convection: water boiling in a pot
Radiation: heat from a fire
The correct density of copper is 8.96 g/cm3. In a lab, your group accidentally measured it as 6.83 g/cm3. What is your group's percentage error?
24%
A close can of soda is considered a __________________________ system, where as the human body is considered an _________________________ system.
A piece of acrylic has a mass of 6.73 g and a density of 0.572 g/cm3. What is the volume of this acrylic?
11.8 cm3
2699.52 J
DOUBLE JEOPARDY!!
If you are running late to school and are driving 72 mph on Highway 6... What is your speed in m/sec?
(1 mile = 5280 ft; 3.28 ft = 1 m)
32.20 m/sec
The battery life of the new iPhone would be considered a ___________________________, where as the manufacturing budget would be a _____________________________.
criteria; constraint