Theories & Principles
This theory includes the claim that atoms are rearranged to form new combinations in a chemical reaction
What is Dalton's Atomic Theory?
The number of significant figures in 0.024
What is two?
The one of the following that is not a pure substance:
water, sugar, brass, helium gas
The family of elements that Barium belongs to
What is the Alkaline Earth Metals?
The smallest subatomic particle in terms of mass
What is the electron?
This experiment led to the suggestion that protons and electrons were randomly distributed in a positively charged cloud
What is JJ Thomson's Cathode Ray?
The larger unit prefix of the following:
nano-, mega-, kilo-, micro-
What is mega-?
The type of change that occurs when liquid water boils into a vapor
What is a physical or phase change?
The number of neutrons in an Argon atom
What is 22?
The percent of Katie's meal that was cookies if her dinner consisted of:
2.0 cookies, 5.0 chicken nuggets, 1.0 piece of bread, 3.0 pears
What is 18%?
This experiment concluded that there is a small, dense, positively charged nucleus in the atom
What is Rutherford's Gold Foil?
The answer to the following problem with correct sig figs:
0.020 x 50 x 11.1
What is 10?
The equation needed to calculate the energy/heat required for a phase change
What is Q = m x (Hvap or Hfus) ?
The orbital that is shaped like a dumbbell and can hold a maximum of 2 electrons each
What is the P orbital?
The scientific notation for the prefix micro-
What is 10-6?
The direction that electrons move when they absorb energy
What is to a higher energy level?
The conversion of 134 nm to km
What is 1.34 x 10-10 km?
What is 572 oF?
The element that corresponds to the following electron configuration:
1s22s22p63s23p3
What is Phosphorus?
The common unit of measurement for volume that is also equal to the mL
What is the cubic centimeter (cm3)?
This principle states that each orbital can hold a maximum of two electrons with opposing spins
What is the Pauli Exclusion Principle?
The flow rate in microliters per second for a drug order with a current rate of 1.95 liters over a 16 hour time period
What is 34 microliters per second?
The number of kilojoules released when 15.0g of liquid water freezes at 0oC
What is 5.01 kJ?
The atomic mass of an element with 2 isotopes (both with 50.0% prevalence) containing the following masses:
15.02amu & 16.02amu
What is 15.5amu?
The distance between the peaks of electromagnetic radiation waves
What is the wavelength?