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WorksheetsIVAN LOVE LOEBEINDN
Total questions: 64
Worksheet time: 45mins
When J. J. Thompson discovered the electron, what physical property of the electron did he measure?
its charge, e
its charge-to-mass ratio, e/m
its temperature, T
its mass, m
The law of conservation energy states which of the following?
Kinetic energy is conserved.
Potential energy is conserved.
The sum of the kinetic energy and potential energy is conserved.
all of the above.
At what temperature do the temperatures on the Celsius and Kelvin scales have the same numerical value?
-40
0
32
at no value
Complete the following sentence. A theory is ______.
a tentative explanation for a set of observations that can be tested by further experimentation.
A statement describing a relationship between phenomena that is always the same under the same conditions.
a unifying principle that explains a body of facts and relations.
a model used to visualize the invisible.
All of the following are properties of sodium. Which one is a physical property of sodium?
It's surface turns black when first exposed to air.
It is a solid at 25°C and changes to a liquid when heated to 98°C.
When placed in water it sizzles and a gas is formed.
When placed in contact with chlorine it forms a compound that melts at 801°C.
A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as _____.
hypothesis
a law
a theory
none of the above
Liquid nitrogen boils at -195.8°C. Express the boiling point of liquid nitrogen in kelvin. (your answer should have three sf, and should only contain digits). Putting an * next to a letter counts as a subscript.
What is the volume of a 2.5 g black of metal if its density is 4.75 g/cm^3?
0.53 cm^3
1.9 cm^3
2.5 cm^3
4.75 cm^3
Which of the following does not represent a chemical change?
a freshly cut apple turns brown
milk turns sour on standing at room temperature
when cooled to 0°C, liquid water becomes ice
frying an egg
Many home freezers maintain a temperature of 90°F, what is the temperature in Celsius? (your answer should have two significant figures)
The * symbol before a letter or number indicates that it is a subscript.
The number 30.40 contains three significant figures.
How many significant figures does the result of the following operation contain? 8.52010 x 7.90
How many significant figures does the result of the following sum contain? 8.5201 + 1.93
The number 1.050 x 10^9 has how many significant figures?
The population of the earth at the end of 2008 was approximately 6.7 x 10^9 people. Which of the following is the correct way to represent this number?
6,700,000,000 people
67,000,000,000 people
67,000,000,000,000 people
none of these
Which of the following is the largest number?
2 x 10^-1
5 x 10^3
3 x 10^4
7 x 10^-6
Which of the following is an example of matter?
The light of a flame
The sound of thunder
The air you breathe
None of these are matter
Which of the following is a chemical property of water?
Ice floats
Water boils at 100°C
Water reacts violently with sodium
All of these are chemical properties
Atoms of the same element with different mass numbers are called
ions
neutrons
allotropes
isotopes
Which of the following elements is chemically similar to magnesium?
sulfur
calcium
iron
nickel
Which of the following elements is chemically similar to oxygen?
sulfur
calcium
iron
nickel
Give the number protons (p), neutrons (n), and electrons (e) in one atom of 238^U.
146 p, 42 n, 92 e
92 p, 92, n 92 e
92 p, 146 n, 92 e
146 p, 28 n, 146 e
The elements in a column of the periodic table are known as ___.
metalloids
a period
noble gases
a group
How many protons and electrons are present in one Br^- ion?
35 p, 35 e
80 p, 81 e
35 p, 34 e
35 p, 36 e
What are the two different ions present in the compound FeCl*3?
Fe^2+, Cl^3-
Fe^3+, Cl^3-
Fe^+, Cl^-
Fe^3+, Cl^-
Which one of the following is an ion?
B^3+
NaCl
He
14^C
A magnesium ion, Mg^2+, has ____ and _____.
12 protons and 13 electrons
24 protons and 26 electrons
12 protons and 10 electrons
24 protons and 22 electrons
Which is the formula for lead (IV) chloride?
Pb*4Cl
PbCl*2
PbCl*3
PbCl*4
Name the compound CrO3.
chromium(VI) oxide
chromium(II) oxide
chromium(III) trioxide
chromium(III) oxide
What are the ions present in the compound CH*4?
C^4+, H^+
C^4-, H^+
C^-, H^+
no ions present
Complete the following chart, in order from left to right.
40^Zr, 21
19^K, 40
21^K, 19
40^K, 21
Complete the following chart, in order left to right.
40, 20, 20, 20
40, 20, 20, 18
20, 20, 40, 20
40, 20, 20, 22
What is the formula for the ionic compound containing iron (III) ions and iodide ions?
FeI
Fe*2I
FeI*2
FeI*3
The following is the formula of a cation that contains a nonmetal: NH4+.
An aluminum ion, Al^3+, has: _________.
13 protons and 13 electrons
27 protons and 24 electrons
16 protons and 13 electrons
13 protons and 10 electrons
An iron (II) ion has: _____.
24 electrons and a charge of 2+
24 electrons and a charge of 2-
26 electrons and a charge of 2+
28 electrons and a charge of 2+
An oxide ion, O^2-, has:
8 protons and 10 electrons
10 protons and 8 electrons
8 protons and 9 electrons
8 protons and 7 electrons
How many protons are there in one atom of nickel?
31
59
28
42
Of the following, which is the formula of an anion that contains a metal?
Cr*2O*7^2+
NH*4^+
SO*4^2-
SO*3^2-
Which ground-state atom has an electron configuration described by the following orbital diagram?
P
Ge
Se
Br
The orbital diagram for a ground state carbon atom is _____.
The orbital diagram for a ground-state nitrogen atom is ____.
A ground-state chromium atom has how many unpaired electrons?
1
2
4
6
The elements in Group 2A are known by what name?
transition metals
halogens
alkali metals
alkaline earth metals
Transition metal elements have atoms or ions with partially filled ______.
s subshells
p subshells
d subshells
f subshells
A ground-state atom of vanadium (Atomic number: 23) has ___ unpaired electrons and is _____.
0, diamagnetic
2, diamagnetic
3, paramagnetic
5, paramagnetic
Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl- increasing radius ?
K^+ < Cl^- < S^2 < P^3-
K^+ < P^3- < S^2 < Cl^-
P^3- < S^2 < Cl^- < K^+
Cl^- < S^2 < P^3- < K^+
Which of the following elements has the smallest first ionization energy?
Make sure to write the ground-state formation for all.
Cl
Na
Be
K
Which of the atoms listed below has the smallest radius?
Al
P
As
Te
The effective nuclear charge (Zeff) felt by the outermost electrons is the strongest for which of the following elements?
Al
Si
P
Cl
Which of the following elements has the greatest electron affinity (largest positive value)?
K
Br
As
Ar
Which one of the following elements is a Lanthanide?
U
Ce
Os
Bi
Which of the following frequencies of light has the highest energy?
2.5 x 10^10 s^-1
7.0 x 10^13 s^-1
1.4 x 10^15 s^-1
5.0 x 10^14 s^-1
In the following diagram of a wave:
(a) is amplitude and (b) is wavelength
(a) is wavelength and (b) is amplitude
(a) is wavelength and (b) is frequency
(a) is amplitude and (b) is frequency
Using the figure below, categorize electromagnetic radiation with an energy of 6.6 x 10-16 J/photon.
Gamma rays
X rays
Ultraviolet
Infrared
Microwave
What is the wavelength of radiation that has a frequency of 5.39 x 1014 s-1? (c = 2.9979 ×108 m/s)
1.80 x 10^-3 nm
556 nm
618 nm
6180 nm
Electrons in an orbital with l = 3 are in a/an _____.
d orbital
f orbital
s orbital
p orbital
How many orbitals are allowed in a subshell if l = 3?
1
3
5
7
Calculate the energy, in joules, required to excite a hydrogen atom by causing an electronic transition from the n = 1 to the n = 4 principal energy level. Recall that the energy levels of the H atom are given by
En = -2.18 x 10-18 J(1/n2)
2.07 x 10^-29
2.25 x 10^-18
2.04 x 10^-18
3.27 x 10^-17
Calculate the frequency of visible light having a wavelength of 486 nm.
2.06 x 10^14 /s
2.06 x 10^6 /s
6.17 x 10^14 /s
1.20 x 10^-15 /s
Which element has the following ground-state electron configuration?
[Ar]4s23d104p5
arsenic
bromine
iodine
selenium
A ground-state atom of manganese (Atomic number: 25) has ___ unpaired electrons and is _____.
0, diamagnetic
2, diamagnetic
3, paramagnetic
5, paramagnetic
How many unpaired electrons does an atom of carbon have in its ground state?
0
1
2
3
Which element has the following ground-state electron configuration?
[Kr]5s24d105p3
Sn
Sb
Pb
Bi
