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32 questions
The atomic number of an element tells you ________
the number of protons in the nucleus.
the number of energy levels (electron shells).
the number of neutrons in the nucleus.
atomic mass.
How many valence (outer energy level) electrons do Alkaline Earth metals have?
1
2
7
8
Which of the following elements is an alkali metal?
calcium
magnesium
mercury
sodium
Mendeleev left gaps (open spaces) in his periodic table because
the table was too small.
protons belonged there.
the table was too big.
elements with the predicted properties hadn't been discovered yet.
The three main groups of elements are metals, nonmetals, and ________.
noble gases.
alkali metals.
radioactive elements.
metalloids (semiconductors).
Most of the elements on the periodic table are ________
metals.
nonmetals.
metalloids.
semiconductors.
Elements in the same group (family) have similar ________
atomic symbols.
atomic sizes.
atomic weights.
chemical properties.
The order of elements in the modern periodic table is based on an element's ________
atomic number.
name.
chemical symbol.
atomic mass.
Which statement about the alkali metals is correct?
They are located in the left-most column of the periodic table.
They are extremely nonreactive.
They are usually gases.
They are halogens.
Which of the following properties best describes non-metals?
often gases at room temperature
shiny luster
malleable
good conductors of heat and electricity
Which group of elements don't react with other elements because they have a full valence shell of electrons?
alkali metals
halogens
alkaline-earth metals
noble gases
What is the name for the elements in group 17?
boron group
oxygen group
halogens
noble gases
Which of the following elements would most likely be a shiny gray solid that conducts electricity, and dents when hit with a hammer?
argon (Ar)
carbon (C)
sulfur (S)
aluminum (Al)
Periods on the periodic table are __________.
Horizontal Rows (left to right)
Vertical Columns (top to bottom)
Groups on the periodic table are __________.
Horizontal Rows (left to right)
Vertical Columns (top to bottom)
All matter is composed of (made of) at least one element on the periodic table.
True
False
What element will have the most similar physical and chemical properties to the element Bromine (Br)?
Fluorine (F)
Carbon (C)
Krypton (Kr)
Selenium (Se)
What element will have the most similar physical and chemical properties to the element Nitrogen (N)?
Phosphorous (P)
Carbon (C)
Oxygen (O)
Sulfur (S)
What element will have the most similar physical and chemical properties to the element Lithium (Li)?
Sodium (Na)
Magnesium (Mg)
Beryllium (Be)
Calcium (Ca)
What element will have the most similar physical and chemical properties to the element Sulfur (S)?
Carbon (C)
Phosphorous (P)
Oxygen (O)
Neon (Ne
Sodium (Na) is found in period ________
3
2
4
1
Sodium (Na) is found in group ________
1
2
3
4
How many periods are on the table?
1
7
8
18
How many groups/families are on the table?
1
7
8
18
The elements found along the staircase (zig zag line) are ________
metals
nonmetals
metalloids
noble gases
The elements to the left of the staircase (zig zag line) are ________
metals
nonmetals
metalloids
The elements to the right of the staircase (zig zag line) are ________
metals
nonmetals
metalloids
Which of the following properties best describes metals?
often gases at room temperature
shiny luster
brittle (breaks when hit with a hammer)
poor conductors of heat and electricity
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