WorksheetsPeriodic Table and Atoms
Total questions: 35
Worksheet time: 28mins
The table shows the atomic mass of four stable calcium (Ca) isotopes. What characteristic is different in each isotope?
the position in the periodic table of the elements
the net charge of the elements
the mass of the protons in the nucleus
the number of neutrons in the nucleus
When sodium metoal reacts with chlorine gas, sodium chloride (table salt) forms. The data table shows information about sodium, chlorine, and sodium chloride. Which statement best describes the properties of sodium, chlorine, and sodium chloride?
All have similar chemical and properties
All have different chemical and physical properties
All have similar chemical properties but different chemical properties
All have similar chemical properties but different physical properties
What is the mass of the nucleus of the most common type of hydrogen atom?
the mass of the one proton
the mass of one electron
the sum of the masses of one proton and one neutron
the difference in the masses of one proton and one neutron
Which two elements have the same number of valence electrons?
C and O
Na and Mg
Cl and F
Ga and Ge
Which of the following elements is a metalloid?
magnesium
silicon
phosophorus
cobalt
The pictures show the position of different elements on the periodic table. Which picture has an X in the locations of the three elements that would be most similar in the way they react?
A
B
C
D
How can a scientist, using the periodic table, find an element with properties similar to another element?
by comparing density
by finding its periodic group
by comparing malleability
by comparing atomic weight
What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?
they are noble (inert) gases
they are nonmetals
they have the same thermal conductivity
they have the same number of protons
Which statement correctly compares an atom of boron-11 and an atom of carbon-14?
boron-11 has one fewer proton and two fewer neutrons than carbon-14
boron-11 has one fewer neutron and two fewer protons than carbon-14
boron-11 has one fewer proton and three fewer neutrons than carbon-14
boron-11 has one fewer neutron and three fewer protons than carbon-14
Which element does the shell model represent?
C
F
Mg
Na
Atom X has 9 protons, 10 neutrons and 9 electrons
Atom Y has 9 protons, 9 neutrons and 9 electrons
Which of the following statements best describes hew Atom X and Atom Y are related?
X and Y are isotopes of the same element
X is an ion and Y is a neutral atom
X and Y are different elements
X is neon and Y is flourine
The atomic number of carbon is 6, which means that carbon atoms always have 6 _____?
ions
protons
neutrons
valence electrons
Isotopes of an atom could be detected based on which of the following characteristics?
atomic radius
nuclear charge
nuclear mass
number of electrons
Which of the following elements is a member of the halogen family and is located in period 3?
argon (Ar)
bromine (Br)
chlorine (Cl)
sulfure (S)
Which element is an alkaline earth metal?
Li
O
Ne
Ca
The figure shows a periodic table with the position of one element indicated by and X. Hou would the element in position X be classified?
halogen
metalloid
noble gas
nonmetal
Which drawing best represents an atom of lithium?
A
B
C
D
The smallest particle of any element that still has the properties of that element is called _____
an atom
a compound
a solution
a mixture
What do all atoms of the same element have in common?
number of neutrons
mass number
atomic number
atomic mass
Which of the following ordered pairs of elements shows an increase in atomic number but a decrease in average atomic mass?
Ag to Pd
Co to Ni
Ge to Sn
Cr to Mo
Which property is chemical?
density
melting point
temperature
flammability
Which two substances are elements?
sand and air
salt and sand
iron and helium
helium and water
Based on the periodic table, how many neutrons are most likely in a neutral atom of potassium (K)?
19
20
39
58
Which of the following is an accurate comparison of the atomic number and mass of copper (Cu) and gold (Au)?
gold has a smaller atomic mass and fewer electrons than copper
gold has the same atomic mass as copper but a greater atomic number
gold has the same atomic number as copper but a much greater atomic mass
gold has both a greater atomic number and a greater atomic mass than copper
According to the periodic table , which statement correctly describe the change from a neutral atom of an element to its ion?
a fluorine atom forms a F-1 ion by losing one electron
a sodium atom forms a Na +1 ion by losing two electrons
a magnesium atom forms a Mg+2 ion by gaining two electrons
a phosphorus atom forms a P-3 ion by gaining three electrons
Which of the following represents a pair of isotopes?
1H and 3H
16O2- and 19F1-
40K and 40Ca
16 O2- and 32S2-
Which of the following graphs best shows the relationship between an element's atomic mass and its atomic number?
A
B
C
D
Which diagram represents and electrically neutral atom?
A
B
C
D
Which statement best describes the part of the atom that is shown by the arrow in the picture?
it is an electron, and it has a negative charge
it is an electron, and it has a positive charge
it is a proton, and it has a negative charge
it is a proton, and it has a positive charge
The atomic number of iron is 26, and the atomic mass is 55.847. What do these numbers mean in regard to protons, electrons and neutrons?
There are 26 each of protons and neutrons, and the rest of the mass is the result of electrons.
There are 26 protons and 26 electrons. Some atoms of iron have 29 neutrons: the .847 shows that there is more than one iotope of iron.
Ther are 26 protons and 29 neutrons. each particle has an atomic mass of 1.
There are 26 protons and 26 neutrons. Since neutrons have slightly more mass than protons, the mass is greater than 32.
The table shows properties of several elements.
Which element would Element X most likely be grouped with on the periodic table?
calcium
chlorine
copper
potassium
According to the periodic table, the neutral atom of what element has 4 protons, 5 neutrons, and 4 electrons?
beryllium
boron
fluorine
aluminum
Which of the following comparisons correctly describes subatomic particles?
an electron has a negative charge and a mass larger than the mass of a proton
a neutron has a negative charge and a mass smaller than the mass of a proton
a neutron has a neutral charge and a mass larger than the mass of an electron
a proton has a positive charge and a mass smaller than the mass of an electron
The table below shows five elements and the way they react with chlorine (Cl). Which two elements are most likely from the same family or group in the periodic table?
calcium and chlorine
potassium and aluminum
sodium and potassium
aluminum and magnesium
Which of the following characteristics of an element can be determined precisely by considering only the element's specific position on the periodic table?
radius of each ion
density of the solid
boiling point of the liquid
number of protons in each atom
