Chapter 1
I am composed of more than 1 element bound in a fixed ratio.
What is a compound?
This notation includes a coefficient, multiplier, and exponent.
What is scientific notation?
This individual organized the first periodic table by grouping elements with similar chemical properties and by order of increasing atomic numbers.
Who is (was) Dimitri Mendeleev?
Chlorine is number 17 on the periodic table. Write out the electron configuration for Chlorine (both longhand and shorthand (noble gas) notations).
What is 1s22s22p63s23p5 & [Ne] 3s23p5?
A medical x-ray machine has a wavelength of 2.10 x 10-11m. Calculate the frequency. Calculate the energy (in J) of this wave.
c= 3.00 x 108 m/s
h=6.626 x 10-34 Js
What is:
v= 1.43 x 1019/s
E= 9.48 x 10-15 J
This type of energy change releases heat energy.
What is exothermic change?
In scientific notation, what is 0.00100 expressed as?
What is 1.00 x 10-3?
This group of elements goes by the ______, located in group 7A of the periodic table.
What are the halogens?
This equation is c=λν. Rearrange the equation to solve for frequency.
What is ν=c/λ?
What is 5 SF?
I am the study of matter and its changes.
What is chemistry?
Lead has a density of 11.34 g/cm3. Calculate the mass (g) of a block of lead with a volume of 2.16 L.
1 cm3=1 mL
1000 mL=1L
1000 cm3=1L
What is 2.45 x 104 g or 24,500 g?
This individual is most known for their gold foil/alpha particle experiment.
Who is (was) Ernest Rutherford?
A photon has a frequency of 8.50 × 1014 Hz. Calculate the wavelength of this light. Calculate the energy of the photon.
For frequency, use the base equation c=λv
For energy, use E=hv
c=3.00 x 108 m/s
h= 6.626 x 10-34(Js)
What is:
Wavelength= 3.53 x 10-7m or 353 nm
Energy= 5.63 x 10-19 J
Identify how many electrons can occupy the f block.
What are 14 electrons (e-)?
I am the explanation for HOW/WHY things happen.
What are theories?
Carry out each calculation and round to the appropriate # of SF: 25.24 min + 28.1 min + 56 min.
What is 109 min?
Atoms of the same element that have different numbers of neutrons.
What are isotopes?
There are ______ energy levels & ________ sub levels.
What are 4 energy levels and what are 4 sub levels?
This element has the symbol Cr.
What is chromium?
If something is _______, it has less energy.
What is stable/stability?
The speed of light in a vacuum is 3.00 × 108 m/s. Calculate this speed in miles/hour (mi/hr).
1 mile= 1609.3 meters
1 hr=60 minutes
1 min=60 seconds
What is 6.71 x 108 mi/hr?
Boron has 2 stable isotopes. Boron-10: 10.013 amu with an abundance of 19.9% and Boron-11: 11.009 amu with an abundance of 80.1%. Calculate the average atomic mass for Boron.
What is 10.811 amu?
Write the electron configuration for a Sodium (Na+ ion).
What is 1s22s22p6?
An iodide ion has 54 electrons. Calculate the overall charge of the iodide ion.
What is 1- charge?