Term 2 Midterm Question Preview (ID: 33994)


Chemistry Term 2 Midterm Review. TEACHERS: click here for quick copy question ID numbers.

The ability of an object to transfer heat is known as thermal conductivity. Which of the following types of elements has the most efficient thermal conductivity?
a) nonmetals
b) gasses
c) metals
d) Semimetals

Why do elements Neon and Argon have similar chemical and physical properties?
a) They are in the same column
b) They are both alkalai earth metals
c) They are in the same row
d) They are both metals

Magnesium and sodium are highly reactive metals in the periodic table of elements. Magnesium and sodium have properties most similar to
a) highly reactive nonmetals like chlorine and oxygen.
b) almost non–reactive gases like helium and neon.
c) less reactive metals like gold and silver.
d) highly reactive metals like lithium and potassium.

Which list of elements is arranged in order of increasing electronegativity?
a) Li, Na, K
b) K, Ca, Sc
c) Be, Mg, Ca
d) F, Cl, Br

Which Color of light would have the lowest amount of energy?
a) Red
b) Blue
c) Yellow
d) Violet

The number of known elements at this time is approximately
a) Infinate
b) 118
c) 100
d) 50

Which Two elements have the most similar chemical properties
a) Phosphorus and Sulphur
b) Beryllium and Magnesium
c) Hydrogen and Helium
d) Potassium and Strontium

Which block of the periodic table contains the noble gasses?
a) s
b) p
c) d
d) f

Which change occurs when an atom in an excited state returns to the ground state?
a) Energy is absorbed.
b) The number of electrons decreases.
c) Energy is emitted.
d) The number of electrons increases.

What is a method used by chemists and astronomers to determine the composition of unknown burning chemicals?
a) Spectomistry
b) Spectroscopy
c) Electrolosys
d) Decomposistion analyzation

A Potassium (K) valence electron in the ground state would have a principle energy number of______?
a) 1
b) 2
c) 3
d) 4

When cations and anions join, they form what kind of chemical bond?
a) hydrogen
b) covalent
c) metallic
d) ionic

How many electrons would Magnesium have to give up to be like a noble gas?
a) 3
b) 8
c) 1
d) 2

Elements in the same group in the periodic table are expected to have similar __________.
a) appearance
b) reactivities
c) densities
d) atomic numbers

Covalent bond is formed between
a) metals and nonmetals
b) nonmetals and non metals
c) metaloids and metaloids
d) a renegade Jedi knight and a Tatooinian queen

iven the equation c = λ ν calculate the frequency of a red light c= 3.0 x 108 m/s Wavelength of redlight = 7 x 10-7 m
a) 2.3 x 10^-8 /s
b) 4.2 x 10^14 /s
c) 3200 x 10^16
d) .4 x 10^8 /s

A 4f electron orbital is most commonly associated with __________.
a) water
b) lantanide series elements
c) magnetism
d) electricity

What preferred charge do Alkalai Metals have?
a) +1
b) -1
c) 0
d) 42

How many valence electrons would a chlorine atom have if it were to gain an electron from sodium?
a) 1
b) 7
c) 8
d) 18

Describe the relationship between the frequency and energy of electromagnetic waves.
a) As frequency increases energy decreases
b) As frequency increases energy disappears
c) As frequency increases energy increases
d) As frequency increases energy remains the same

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