Classification of Matter
Significant Figures
Density
Periodic Table
Types of Energy
100
Is the following an element, compound, or mixture?
Gasoline (C8H18)
Compound
100
Convert the following number to scientific notation, sig figs count.
0.00038270
3.8270x10-4
100
What is the unit for density?
g/cm3, g/mL, or kg/L
100
What does the atomic number equal?
number of protons
100
What is the name for energy involved in movement?
Kinetic Energy
200
Is the following a homogenous or heterogenous mixture?
Aluminum foil (ignore container)
Homogenous
200
In scientific notation math, what do you need to do to perform addition?
The exponents need to be the same before performing addition.
200
What is the difference between mass and weight?
Mass is how much matter an object has while weight is how much gravity is pulling you towards earth (down).
200
What type of elements are found to the right of the staircase?
Nonmetals
200
What is the law of conservation of energy?
Energy cannot be created nor destroyed only transformed (under normal conditions)
300
What is the triple point?
When all three states of matter exist at the same time and are constantly phases changing at equilibrium
300
Perform the following calculation, answer must be in scientific notation
(8.23x10-4)x(2.34x107)
1.92x104
300
What is gravity?
A force that pulls objects towards each other. (saying pulls you down is not correct)
300
What is an isotope?
The same element but different number of neutrons.
300
What is the definition of power?
Amount of energy transferred over time
400
What phase change occurs when a liquid becomes a gas>
Vaporization or Evaporation
400
How many sig figs are in each numbers
a) 827
b) 0.00209
c) 100
d) 1.20120 x108
a. 3
b. 3
c. 1
d. 6
400
Calculate the volume of an piece of aluminum if it has a density of 2.70 g/cm3 and a mass of 17.92g? Sig figs matter!
6.64 cm3 (or mL)
400
What is group 2 called? (ie Berylium)
Alkaline Earth Metals
400
What is the mass of a person if they have 2.79x104 J of potential energy and a height of 60. m? Sig figs count!
47 kg
500
What is the difference between a molecule and compound? Give an example of each
Molecules are two or more atoms bonded together (O2), compounds are two or more different elements bonded together (CO2)
500
What is the difference between accuracy and precision?
Accuracy is how close you are to the correct answer and precision is how close your attempts(trials) are to each other
500
What is the definition of buoyancy and what is it equal to?
The upward force exerted by a fluid on an object that is submerged (at least partially) in said fluid and is equal to the weight of the fluid displaced
500
How many electrons are there in Mn5+?
20 electrons
500
A semi-truck is traveling up the grapevine with a full load weighing 36287 kg. If its mechanical energy is 3.55x108 J and at a height of 976.3m, what speed is the truck going?
Give your answer to 3-4 digits and the correct unit!
20.12 m/s