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WorksheetsFall Chem Review for Exam
Total questions: 84
Worksheet time: 42mins
What kind of waves have a color spectrum known as ROYGBIV?
visible light
microwaves
infrared waves
radio waves
What is the correct term for the top of a wave?
trough
crest
amplitude
wavelength
Which of the following describes the proper way of holding a test tube that had boiling water in it?
point the open end towards your partner
hold the test tube directly in the hottest part of the flame
hold the test tube with clamps and pointing away from yourself and others
hold the test tube with your fingers by the rim
What is the formula for calculating density?
Density = Volume (mL) / Mass (g)
Density = Mole / Mass (g)
Density = Volume (mL) / Mole
Density = Mass (g) / Volume (mL)
How many grams are in 47 mg?
.047 grams
4.7 grams
.47 grams
.0047 grams
How many meters are in 1230 cm?
.123 meters
12.3 meters
1.23 meters
123 meters
How many significant figures are in the measurement 604 grams?
2
5
3
1
What is the name of this chemical?
msds
chemtrec
flinn scientific
Acetone
According the the MSDS in the given picture, what is the health reactivity for this substance?
1, slight
3, serious
0, minimal
2, moderate
If the chemical in the given image were to get in your eyes, according to the given MSDS - what should you do?
remove to fresh air at once
flush with fresh water for 15 minutes
induce vomiting
drink warm milk or water
How many significant figures are in the measurement 0.28 grams?
3
4
2
1
How do you calculate the number of moles in a given amount of grams of an element?
multiply the given grams by the grams from the periodic table (molar mass) for the element
divide the grams from the periodic table (molar mass) for the element by the given grams
divide the given grams by 6.02 x 10^23
divide the given grams by the grams from the periodic table (molar mass) for the element
How many atoms are in one mole of any element?
6.02 x 10^23 atoms
the amount given on the periodic table for the element (molar mass)
12 atoms
divide 6.02 x 10^23 by the grams from the periodic table (molar mass) for the element
A sample substance is a blend of three kinds of matter. Each kind of matter kept its own identity and properties. How would you classify the sample?
element
mixture
pure substance
compound
The closeness of a measurement to its true value is a measure of its
usefulness
reproductibility
accuracy
precision
According to the law of conservation of mass, when a reaction occurs the mass of the reactants will be __?__ the mass of the products.
greater than
less than
less than or equal to
equal to
The density of 2.0 g of gold is __?__ 2.0 kg of gold. This is explained by the fact density is an intensive property.
the same as
more than
less than
varies depending on what type of gold
What charge do electrons have?
positive charge
negative charge
no charge
no mass
What is the total number of protons and neutrons in the nucleus of an atom?
the atomic number
the number of neutrons
the mass number
the average atomic mass
What is the subatomic particle that causes the mass to vary from one isotope of an element to another isotope of that same element?
electron
proton
quark
neutron
What does the atomic number of an element indicate?
the number of protons in the nucleus
the number of electrons in the nucleus
the number of energy levels in the atom
the number of neutrons in the nucleus
What is the correct molecular geometry (shape) for water (H2O)?
trigonal pyramidal
bent
tetrahedral
linear
What is the correct molecular geometry (shape) for carbon dioxide (CO2)?
tetrahedral
bent
linear
trigonal pyramidal
What is true about Be, Mg and Sr?
they are in the same period (row) on the periodic table
they are all metalloids
they member of the halogen family
they have similar chemical reactivity because they are in the same family (column) on the periodic table
What is the correct molecular geometry (shape) for carbon tetrachloride (CCl4)?
tetrahedral
trigonal pyramidal
bent
linear
If a calcium ion has a +2 charge and a sulfide ion has a -2 charge, how many calcium ions and how many sulfide ions are needed for the compound to be neutral?
2 calcium and 1 sulfide
1 calcium and 1 sulfide
3 calcium and 2 sulfide
6 calcium and 1 sulfide
What is true about the elements in the Noble Gas family (Group 18)?
they all react violently when expose to hydrogen gas
they are all highly flammable
they are the most resistant to forming compounds
they are a part of the "f block"
Which of the following groups is most likely to react with oxygen?
Group 13
Group 18
Group 17
Group 1
What is the correct molecular geometry (shape) for NH3?
trigonal pyramidal
linear
bent
tetrahedral
Columns on the Periodic Table are:
periods
groups
transition
actinides
Rows on the Periodic Table are:
groups
columns
periods
halogens
What is the group name for elements in Group 2?
Alkali Metals
Transition Metals
Halogens
Alkaline Earth Metals
Which group is most resistant to bonding?
Noble Gases
Halogens
Alkali Metals
Transitions Metals
Which has the lowest electronegativity?
Fluorine (F)
Francium (Fr)
Lithium (Li)
Krypton (Kr)
Which has the smallest atomic radius?
Francium (Fr)
Lithium (Li)
Fluorine (F)
Krypton (Kr)
Which has a full outer shell in its ground state?
Alkali Metals
Halogens
Transition Metals
Noble Gases
Which has only one electron in its outermost (valence) shell?
Alkali Metals
Noble Gases
Halogens
Transition Metals
Which behaves a lot like calcium?
sodium
magnesium
sulfur
chlorine
In general, what is the change in the atomic radii as you read down an individual group?
the atomic radii decrease
the atomic radii remain constant
the atomic radii increase
there is no pattern for the atomic radii
In general, what is the ionization energy from left to right across an individual period?
the ionization energy decreases
the ionization energy decreases, then increases
the ionization energy increases, then decreases
the ionization energy increases
What did the gaps in Mendeleev's table represent?
undiscovered elements
ions
radioactive elements
unstable elements
What is the distance between two corresponding points on adjacent waves called?
hertz
wavelength
frequency
speed
How does a mole of lead atoms compare with a mole of iron atoms?
has more atoms
has fewer atoms
has the same number of atoms
cannot be determined because iron is magnetic
How do you calculate the number of molecules are present in a given number of moles of a diatomic molecule?
divide by 6.02 x 1023
multiply by the molar mass of the molecule
divide by the molar mass of the molecule
multiply by 6.02 x 1023
What is the noble gas configuration for scandium (Sc)?
[Ar]4s23d1
[Ar]4s23p1
[Ar]4s24p1
[Ar]4s24d1
Which of the following is NOT a quantitative measurement?
4.0 mL
a yellow precipitat
5.76 g/mL
8 reindeer
A(n) __?__ is an element that has properties of both metals and nonmetals.
metal
nonmetal
metalloid
alkali metal
What are the correct safety practices for using a Bunsen Burner?
keep your hair/clothing away from the flame
turn off when not in use
light with a striker
all of the other choices are correct
What type of bond is formed between Mg and O?
ionic
polar covalent
non-polar covalent
What type of bond is formed between H and H ?
ionic
nonpolar covalent
polar covalent
What type of bond is formed between C and Cl?
ionic
non-polar covalent
polar covalent
What type of bond is formed between Cl and Cl?
polar covalent
ionic
nonpolar covalent
Which is true if an accident happens in the lab:
report it to the teacher
report it to the nurse
blame it on your partner
ignore it
When should you use the safety shower?
on Christmas Day
to treat a full body chemical spill
on Christmas Eve
to treat chemicals in your eye
Who is responsible for returning lab materials to their proper place after lab?
students entering the laboratory
building services personnel
students who did the investigation
the chemistry teacher
Before starting lab, what should students with long hair do?
comb or brush their hair
ask the chemistry teacher what to do
ask their lab partner to do the work
tie their hair back
What is a compound?
a substance made of two or more chemically bonded elements
a molecule formed by same element atoms
another word for an atom
any substance that can be split apart
What is the following a description of:
add the atomic masses of the constituent atoms
how to calculate the molar mass of an elf
how to calculate the molar mass of a compound
how to calculate the molar mass of an atom
how to calculate Avogadro's number for a compound
Which is a picture that illustrates both accurate and precise results?
Experiment II
Experiment III
Experiment IV
Experiment I
What is the BEST eye protection one should wear when doing an experiment with heat, chemicals and glassware?
contact lenses
prescription eye glasses
no eye protection is needed
safety goggles
How many electrons does an atom of magnesium (Mg)?
12
24
2
19
Which of the following results from a chemical change?
the mass gets smaller
one or more substances change into entirely new substances with different properties
it breaks into smaller pieces
the phase changes
When will a solid object float in a liquid?
if they are cooled to the same temperature
if they are heated to the same temperature
if it is less dense that the liquid
if it is more dense that the liquid
What is the term for "atoms of the same element that have different masses"?
moles
nuclides
neutrons
isotopes
What has a negative charge and a mass of 0 a.m.u.?
electron
neutron
proton
atom
What is the atomic number of the element whose electron configuration is 1s22s22p63s23p63d84s2 ?
26
28
27
2
What element has the electron configuration of 1s22s22p63s23p63d84s2 ?
Manganese (Mn)
Cobalt (Co)
Nickel (Ni)
Copper (Cu)
When a substance is put into a flame and gives off a characteristic color, the color is produced when electrons in the excited state
return to higher energy states within the atoms
are lost by the atom
are gained by the electron
return to lower energy states within the atoms
What is the Law of Conservation of Mass?
matter cannot be created nor destroyed
matter cannot be changed from one state to another
matter can be created and destroyed
mass should not be wasted
Homogeneous and heterogeneous are two types of what?
compounds
mixtures
elements
milk
How many protons and electrons does an atom of silver (Ag) have?
47, 61
47, 108
47, 47
1, 0
Which element has 29 protons and 51 neutrons?
antimony (Sb)
uranium (U)
oxygen (O)
copper (Cu)
Which of the following is equivalent to Avogadro's number of atoms of any element?
6.02 x 1023 particles
100 g of that element
the atomic number of that element
the mass number of that element
Which of the following is the most accurate for measuring volume?
beaker
graduated cylinder
Florence flask
thermometer
__?__ elements are liquid and __?__ elements are solids at room temperature.
2, 11
11, most
2, most
none of the, most
As used in chemistry lessons, what is a mole?
a fuzzy little creature
a dozen
a facial growth
6.02 x 1023
What is the correct unit (label) for the molar mass?
g/mol
g/atoms
atoms/gram
mol/g
How is the number of moles in a given number of grams calculated?
Add the atomic masses of the elements in the compound
Divide the given number of grams by the molar mass
Multiply the given number of grams by the molar mass
Divide the given number of grams by the 6.02 x 1023
Where on the periodic table on the wall is the number which equals the molar mass for an element?
It is the number above the symbol.
It is the smaller number.
It is the number under the symbol.
It is written above each column.
What do all elements in Group 2 have in common?
they all have two energy levels
they all have unpredictable properties
they all have only one electron total
they all have two valence electrons
Which of the following is true of most elements?
They are metals.
They are nonmetals.
They are metalloids.
They are synthetic.
What are x-ray waves used for?
by insects to locate nectar
to penetrate solids and in doctors' offices and airports
for cooking food quickly
to treat cancer
What is the name of the elements in column 18?
Halogen family
Chalcogen family
Noble Gas family
Alkaline Earth family
Complete the following list of analogies:
6.02 x 1023 is to 1 mole as
2 is to a pair as
__?__ is to a dozen
13
500
3
12
