WorksheetsPeriodic Table
Total questions: 25
Worksheet time: 2hrs 5mins
____________ is the smallest part of matter.
atoms
electrons
protons
neutrons
Scientists cannot directly study atoms because_________.
they are so big
they are so small
they are invisible
they are too dark to see
A________ has a positive charge.
atom
electron
proton
neutron
Thorium (Th) has an atomic number of 90. How many electrons does it have?
142
232
90
322
Which parts of the atom are not found in the nucleus?
electrons
protons
neutrons
the core
Using the periodic table, which of the following pairs of elements should you expect to have the most similar properties?
Aluminum (Al) and Silicon (Si)
Sulfur (S) and Selenium (Se)
Sodium (Na) and Nitrogen (N)
Hydrogen (H) and Helium (He)
In the modern periodic table, which of the following describes atoms with similar chemical behavior and properties?
They have similar atomic masses
They are located in the same group
They are located in the same period
They have the same number of isotopes
What is a subatomic particle without a charge, located in the nucleus of an atom?
neutron
proton
electron
valence electron
What is the combined mass of all protons and neutrons of an atom?
atomic mass
subatomic particles
atomic number
nucleus weight
What is the system of electrons surrounding the nucleus of an atom?
valence electrons
nucleus
electrons
electron cloud
Which of the following statements about atoms is true?
They are the same for all elements
They are both stable and nonradioactive
They are arranged in the periodic table according to number of protons
They are made up of protons and electrons in a nucleus surrounded by orbiting neutrons
What is the number of protons in the nucleus of an atom that determines the chemical properties of an atom?
mass number
atomic mass
atomic number
atomic symbol
What is a subatomic particle with a negative charge?
neutron
proton
electron
electron cloud
Carbon is a neutral element with an atomic number of 6. How many electrons does it have?
12
6
18
2
Why does the atomic mass of an element differ from the atomic number?
Atomic number consists of only the number of neutrons. Atomic mass also includes the number of protons.
Atomic number consists of only the number of protons. Atomic mass also includes the number of neutrons.
Atomic number consists of only the number of protons. Atomic number consists of only the number of electrons.
Atomic number consists of only the number of electrons. Atomic mass also includes the number of protons.
What subatomic particle(s) are found in the atom's nucleus?
Protons
Neutrons
Electrons
Protons and Neutrons
Which of the following statements regarding the periodic table of elements is true?
The periodic table does not list all of the known elements in the universe
The periodic table of elements can be predicted by their positions in the periodic table, but how the elements react with each other cannot be predicted
All elements on the periodic table are made up of the same fundamental particles: protons, neutrons, and electrons
All nonliving thing things consist of elements on the periodic table; all living things consist of things that are not listed on the periodic table
If an element has 8 protons, 8 neutrons, and 9 electrons. What is the elements atomic mass?
8
16
19
9
A neutral element has the same ____________.
number of protons and neutrons
number of electrons and neutrons
number of electrons and valence electrons
number of electrons and protons
What is the atomic number of the element Iridium (Ir)?
192
115
1
77
If Copper (Cu) has an atomic mass of 64, how many neutrons does it have?
64
34
29
35
Which element creates all living things and is the focal point of organic chemistry?
Oxygen
Hydrogen
Radon
Carbon
What is the most electronegavity element?
Fluorine
Francium
Radon
Hydrogen
Which of the following groups of elements would have properties most similar to Arsenic (As)?
Boron (B), Silicon(Si), and Germanium (Ge)
Nitrogen (N), Phosphorus (P), and Antimony (Sb)
Germanium (Ge), Selenium (Se), and Bromine (Br)
Gallium (Ga), Germanium (Ge), and Selenium (Se)
Some characteristics that are common to metals are that they are good conductors of heat and electricity, are malleable, and are often shiny (have luster). Which of the following are all metals?
Potassium (K), Chromium (Cr), and Tellurium (Te)
Sodium (Na), Cobalt (Co), and Platinum (Pt)
Ruthenium (Ru), Copper (Cu), and Radon (Rn)
Oxygen (O), Fluorine (F), and Argon (Ar)
