Unit 1
Boiling at 100 degrees and being attracted to the south pole of a magnet are examples of _____ properties.
physical
A basketball weighs approximately 1.35kg. What is this mass in grams? (1 kg = 1,000 g)
1350 g
The name for a negatively charged atom
anion
What shape is the p sublevel?
dumbbell
How many electrons does Li+1 have?
2 electrons
The components of this mixture can be easily seen with the naked eye and are distinguishable:
a) heterogenous
b) homogenous
c) solution
d) pure substances
a) heterogeneous
Pluto's average distance from the Sun is about 3,666,000,000 miles. What is this in inches? (5280 ft = 1 mile)
2.32 x 1014 in
232,000,000,000,000
Who discovered the nucleus by bombarding gold foil with positively charged particles and noting that some particles were widely deflected?
a) Rutherford
b) Dalton
c) Chadwick
d) Mendeleev
a) Rutherford
A single orbital in the 4p level can hold ___ electrons.
2
What group does Magnesium belong to?
alkaline earth metals
Which of the following describes a physical change? Choose all that apply.
a) melting ice
b) milk turning sour
c) burning paper
d) pulverizing a rock
a and d
The average diameter of an adult human eyeball is 24mm. What is the diameter in dm? (1 dm = 10 cm)
0.24 dm
The nucleus of an atom is
a) negatively charged and has a low density
b) negatively charged and has a high density
c) positively charged and has a low density
d) positively charged and has a high density
d) positively charged and has a high density
Elements lose or gain electrons to become like this group of elements...
noble gases
The element with the greatest electronegativity is
Fluorine
Which state of matter can be easily compressed?
gas
On February 3rd, I'll be 819,936,000 seconds old. How old will I be in years? (Assume 365 days in a year)
26 years
Who is credited with creating the principles of atomic theory that is recognized today?
a) Avogadro
b) Bohr
c) Dalton
d) Rutherford
c) Dalton
Make sure to review Dalton's atomic theory!
The number of valence electrons in the group 1 elements is
One-half the distance between the nuclei of identical atoms that are bonded together is called the
atomic radius
Round your answer to the correct number of significant figures:
101.978 + 1 =
103
How many kg are equal to 3.3 scruples?
1 scruple = 20 grains, 1 ounce = 480 grains, 1 gram = 0.03215 ounces
4.28 x 10-3 kg
.00428 kg
How many neutrons are there in Pb-206? Pb-207? Pb-204?
124, 125, 122
What is the electron configuration for Carbon?
1s22s22p2
In period 2, there are 8 elements. What sublevel(s) is/are being filled?
a) s
b) s and d
c) s and p
d) s, p, and d
c) s and p