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WorksheetsActive Chem Unit 1 Review
Total questions: 45
Worksheet time: 51mins
This is a pure substance which cannot be chemically broken down into simpler materials.
Element
Compound
Ion
Isotope
The following is a definition of what: smallest particles that retain the properties of an element.
atom
cation
anion
isotope
This property can only be described when a reaction takes place.
chemical
physical
mass
density
This property does not change the nature of the substance.
chemical
physical
density
mass
Which of the following is NOT a type of radiation?
alpha
beta
delta
gamma
The majority of known elements are _______________.
metals
metalloids
noble gases
non-metals
Which of the following does not belong on the list?
electrons
protons
neutrons
radiation
On the Periodic Table, elements are arranged in what order?
increasing atomic number
increasing atomic mass
increasing number of isotopes
increasing radioactivity
Elements with the same atomic number but a different number of neutrons are called ____________.
cations
anions
isotopes
wayward atoms.
Which is the currently accepted model or theory of an atom?
Bohr Model
Quantum Mechanical Model
Mendeleev's Model
Newtonian Model
A form of energy which travels through space at the speed of light (c = 3.00 108 m/s) is __________ _______________.
light energy
electromagnetic radiation.
proton decay
cathode rays
One mole is equal to _______________.
6.022 x 1023
6.022 x 10-23
6.63 x 10-34
6.63 x 1034
The energy within electromagnetic radiation is given by E=hν where E is energy, h is Planck's constant, and ν is the frequency. What is the value of Planck's constant?
6.022 x 1023
6.022 x 10-23
6.63 x 10-34
6.63 x 1034
The following describes which type of element: is a poor conductor of heat and electricity, in its solid state is usually dull, and their oxides form acidic aqueous solutions.
metals
non-metals
noble gases
metalloids
After Thomson's experiment, what was believed about an atom's structure?
The atom is mostly empty space, has a solid, dense center, and has a neutral charge.
The atom has a neutral charge, with a mostly positive space in which there are negative charges similar to a chocolate chip cookie or plum pudding.
The atom has a dense center with rings of electrons in circular orbits, each at a different energy level.
The atom has a dense center with electrons in differently-shaped orbits, each at a different energy level.
After Rutherford's experiment, what was believed about an atom's structure?
The atom is mostly empty space, has a solid, dense center, and has a neutral charge.
The atom has a neutral charge, with a mostly positive space in which there are negative charges similar to a chocolate chip cookie or plum pudding.
The atom has a dense center with rings of electrons in circular orbits, each at a different energy level.
The atom has a dense center with electrons in differently-shaped orbits, each at a different energy level.
Which of the following is Bohr's model of the atom?
The atom is mostly empty space, has a solid, dense center, and has a neutral charge.
The atom has a neutral charge, with a mostly positive space in which there are negative charges similar to a chocolate chip cookie or plum pudding.
The atom has a dense center with rings of electrons in circular orbits, each at a different energy level.
The atom has a dense center with electrons in differently-shaped orbits, each at a different energy level.
Which of the following is the Quantum Mechanical model of the atom?
The atom is mostly empty space, has a solid, dense center, and has a neutral charge.
The atom has a neutral charge, with a mostly positive space in which there are negative charges similar to a chocolate chip cookie or plum pudding.
The atom has a dense center with rings of electrons in circular orbits, each at a different energy level.
The atom has a dense center with electrons in differently-shaped orbits, each at a different energy level.
Which of the following does NOT fit with the rest of the elements?
Silicon
Copper
Uranium
Manganese
Which of the following will react with hydrogen?
lead
copper
silver
gold
Cathode rays can also be called
protons
electrons
alpha particles
neutrons
Which group of atoms should have similar chemical behavior?
Li, Be, Mg, Al
Mg, Ca, Sr, Ra
C, S, Br, Xe
K, Ca, Sc, Zn
Which element has the largest atomic radii in the 4th period of the Periodic Table?
potassium
zinc
gallium
bromine
Visible light is produced in a hydrogen spectrum when the electron
falls to a lower energy level.
is excited to a higher energy level.
remains in an excited state for several seconds.
is removed from the atom.
Which element has the highest 1st ionization energy of the 3rd period of the Periodic Table?
potassium
copper
germanium
bromine
The nuclear charge of an atom of chlorine-35 is:
+17
- 17
+ 1
-1
Which of the following CANNOT be categorized as a substance?
water
stainless steel
ammonia
potassium chloride
What is always conserved in a chemical reaction?
atoms
molecules
formula units
subscripts
The charge on an atom is
zero since the atom contains equal numbers of electrons and protons.
positive since the protons are much heavier than the electrons.
negative since the electrons are further out from the nucleus.
determined by the number of electrons the atom contains.
Which color of light has the least amount of energy (longest wavelength)?
violet
orange
red
green
When placed in distilled water, the pH of metal oxides will have a pH (a) than 7.
When placed in distilled water non-metal oxides will have a pH (a) than 7.
Which of the following elements in the third period would have the smallest atomic radius?
sodium
magnesium
silicon
sulfur
The element will the highest ionization energy, excluding the noble gases, is (a) .
Which of the following is the equivalent of an alpha particle?
none of the above
Which of the following is the equivalent of an beta particle?
none of the above
Which of the following is the equivalent of an gamma particle?
none of the above
What is the correct name of the compound Al2S3?
dialuminum trisulfide
aluminum(III) sulfide
aluminum sulfide
none of the above
What is the electron configuration of a potassium ion?
1s22s22p63s23p64s1
1s22s22p63s23p6
1s22s22p63s2
1s22s22p63s23p64s2
What is the correct name for the compound N2O5?
nitrogen oxide
binitrogen pentaoxide
dinitrogen pentaoxygen
dinitrogen pentaoxide
Which of the following is NOT physical property?
hardness
density
reacts with hydrochloric acid
color
Rutherford is associated with what experiment?
Gold foil experiment
Oil drop experiment
Cathode ray experiment
Radioactivity experiment
The charge on the sulfate ion is (a) (use the format #+ OR #-).
There is one cation that is polyatomic. Name it (you do not need to write the formula).
(a)
How many electrons does phosphorus need to complete its octet?
(a)
