WorksheetsAP Chem: Thou Shalt Not Forget- Units 0 and 1
Total questions: 30
Worksheet time: 15mins
What method separates mixtures based on differences in particle size?
Distillation
Chromatography
Filtering
Mass conservation
In paper chromatography, which component moves up the farthest?
The component most similar in polarity to the mobile phase
The component least similar in polarity to the mobile phase
The heaviest component
The lightest component
What is conserved during chemical and physical changes?
Volume
Mass
Polarity
Boiling point
Which of the following is the correct formula for density?
Density = mass/volume
Density = volume/mass
Density = mass x volume
Density = mass + volume
What determines the amount of product for a reaction?
The excess reactant
The limiting reactant
The temperature
The pressure
What type of change separates a compound into elements?
Physical Change
Chemical Change
Both
Neither
In paper chromatography, if water is used as the “mobile phase”, what kind of substance will move up the farthest?
Something polar
Something nonpolar
Both
Neither
Always read a graduated cylinder...
from eye level
the highest number possible showing moisture
looking down into the cylinder
blindfolded.
What is the total # of covalent bonds carbon can form when drawing a Lewis structure?
12
6
4
8
What do mass spectroscopy graphs measure?
Mass of isotopes
Mass of protons
Energy of electrons
Number of electrons
Which orbital is filled after 4p?
5s
4s
3d
4p
Fill in the blanks: germanium is a ________________, hydrogen is a _________________ and uranium is a ________________
metal, non-metal, metalloid
metalloid, non-metal, metal
non-metal, metal, metalloid
Are anions larger or smaller than their neutral atoms?
Larger
Smaller
Same size
What is an example of a covalent network solid?
Salt
Diamond
Sugar
Water
Distillation separates mixtures based on differences in what property?
Solubility
Boiling Point
Particle Size
State of Matter
Gallium loses 3 electrons to become a cation with a +3 charge. What 3 electrons does gallium lose?
One from 4p, two from 3d
one from 4p, one from 3d, one from 4s
two from 1s, one from 2s
one from 4p, two from 4s
Moving across a row (L to R) on the periodic table, Zeff _________________
Increases
Decreases
Stays the same
Which piece of glassware is the most precise
beaker
graduated cylinder
burette
test tube
Why do atoms get smaller moving across a period (L to R) on the periodic table?
More protons (q) to attract the electrons
Fewer protons (q) to attract the electrons
More energy shells (r) so it can't attract the electrons
Fewer energy shells (r) so it attracts the electrons closer
Why are anions larger than their neutral atoms?
More electron-electron repulsion
Fewer protons to attract electrons
More electrons to attract protons
More Zeff to attract electrons
When an electron is in a lower energy level, it has a ________________ 1st ionization energy
Higher
Lower
Same
The PES spectrum below is for the element _______________.
O
Ne
N
F
What is the electron configuration for this PES graph?
1s22s22p63s23p2
1s22s22p63s23p1
1s22s22p63s23p3
1s22s22p63s2
When an electron is in a lower energy level, it is ________________ away from the nucleus
Closer
Farther
When reading a PES (Photoelectric Spectroscopy) graph, what does the height of a peak represent?
The number of electrons
The number of protons
The mass or the isotope
The amount of energy the electron has
Isotopes of an element have the same number of __________, but different number of __________.
protons, neutrons
neutrons, protons
protons, electrons
electrons, protons
When reading a PES (Photoelectron Spectroscopy) graph, a larger binding energy means that the electrons are _________________ the nucleus?
Closer to
Farther from
List these pieces of glassware from most precise to least precise: burette, beaker, graduated cylinder.
Burette, Graduated Cylinder, Beaker
Graduated Cylinder, Burette, Beaker
Beaker, Graduated Cylinder, Burette
Burette, Beaker, Graduated Cylinder
What is the measurement of the burette? (in mL)
6.6mL
6.64mL
7.36mL
7.3mL
