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WorksheetsUnit 7 Review - Periodic Table and Bonding
Total questions: 40
Worksheet time: 20mins
Which is the best explanation of how the Bohr model and the electron cloud model are different?
the electrons are arranged differently
the nucleus is a different shape
there are different numbers of electrons
the atomic particles have different masses
What was one of Dalton's major conclusions?
all atoms of the same element are different sizes
all atoms of the same element are the same
all atoms of the same element react differently
all atoms of the same element are combined
Which scientist is NOT matched to his contribution correctly?
Bohr = planetary model with negatively-charged spheres orbiting positively charged ones
Chadwick = neutrons
Rutherford = most of the mass is in the nucleus and the rest is mostly empty space
Dalton = matter can be cut in half until it is too small to cut and that is an atom of that matter
What is TRUE about protons and electrons?
there must be an equal number of each
their total must be equal to the number of neutrons
there are always more protons than electrons
there are always more electrons that protons
Which one is NOT found in the nucleus?
protons
electrons
neutrons
quarks
Which atomic particle is matched correctly with its charge?
electron = 1+
neutron = 1-
proton = 0
proton = 1+
Which analogy best describes Bohr's model?
chocolate chip cookie/muffin/plum pudding
planetary orbits
clouds
peach or plum
What charge does the nucleus have?
positive
neutral
negative
static
What is the best description of the modern model of the atom?
there is no nucleus and the protons and electrons are floating around together
the protons are in the nucleus and the electrons are floating around it in no defined orbit
the protons are in the positively charged nucleus and the electrons are floating in a negatively charged cloud that gives the atom its size
the protons are in the nucleus and the electrons float in set orbits around the nucleus
What are valence electrons?
the electrons in the inner-most energy level or shell
the electrons in the outer-most energy level or shell
the electrons floating in the cloud
the electrons that are in the middle energy level or shell
Which element is a noble gas, has 18 protons, and has an atomic weight of 39.95?
Helium
Neon
Xenon
Argon
Which subatomic particle gives each element unique physical and chemical properties?
number of protons
number of neutrons
the element's origin
the configuration of electons
How are groups/families different from periods on the periodic table?
groups/families end when the outermost shell is full and periods have the same number of valence electrons
groups/families have the same number of valence electrons and periods end when that energy level is full
groups/families are metals and periods are nonmetals
there is no difference between the two
What information does the atomic number tell us?
the number of protons which is equal to the number of neutrons
the number of protons and neutrons together
the number of protons which is equal to the number of electrons
the number of electrons and protons found in the nucleus
What is the difference between mass and weight?
mass is the force of gravity pulling down and the weight is the amount of matter in a substance
mass is the amount of matter in a substance and weight is the force of gravity pulling down
mass is the amount of something and weight is how much space it takes up
they are exactly the same thing
Which set of elements are noble gases?
lithium, sodium, and potassium
beryllium, magnesium, and calcium
nitrogen, phosphorus, and tin
helium, neon, and argon
True or false: horizontal rows are called periods
True
False
How is the atomic mass calculated?
neutrons + protons = atomic mass
neutrons - protons = atomic mass
neutrons x protons = atomic mass
neutrons / protons = atomic mass
Which is true?
Oxygen has an atomic mass of 8
Oxygen has an atomic number of 16
O is the chemical symbol for oxygen
Oxygen has 16 neutrons
True or False: The atomic mass of an element is the larger number under the atomic symbol and name.
True
False
True or False: The atomic number is the smaller number above the chemical symbol and name.
True
False
True or False: Mercury's chemical symbol is Me.
True
False
With which element does magnesium have the most properties in common?
calcium
chlorine
gold
potassium
Which is the best description of a metal?
hard, shiny, poor conductor, not ductile
hard, shiny, good conductor, not malleable
hard, shiny, good conductor, malleable/ductile
hard, colorful, poor conductor, not ductile
Which nonmetal is not found to the right of the zig-zag line on the periodic table?
hydrogen
helium
nitrogen
chlorine
If Shanice was researching what chemicals produce different color flames, what possible experiment could she be designing?
how high fireworks can be launched into the air
how different chemicals react with fire to produce colored flames
how hard it is to make fireworks
how chemicals react to being lit with a match
At which point would you find a metal?
group 16, period 2
group 17, period 4
group 2, period 3
group 13, period 2
Where are metalloids found?
pretty much all over the periodic table
to the right of the stair-step
they are the stair-step elements
there are no such things as metalloids
Hypothesis: Acids and bases can be distinguished by testing four different samples with litmus paper.
What is the dependent variable?
litmus paper
the sample
amount of sample
color change of litmus paper
Which bond occurs between metals and nonmetals?
ionic
covalent
both
neither
How many elements are involved in the following chemical reaction: HCl + NaOH = NaCl + H2O?
4
10
5
7
If calcium is a metal, what type of bond will it form?
it will share electrons in a covalent bond
it will share electrons in an ionic bond
it will lose electrons in a covalent bond
it will lose electrons in an ionic bond
What is the best definition of a chemical bond?
a loose grouping of elements that have no attachment to each other
the force holding two atoms together
a group of elements combining to form a new substance
the way a compound changes when exposed to heat or water
Which type of bond shares electrons?
covalent
ionic
symbiotic
chemical
True or False: Noble gases like to bond with other elements.
True
False
An atom with too many electrons will bond with which type of atoms?
one with not enough electrons
one with an equal number of protons and electrons
one with an equal number of protons and neutrons
one with too many neutrons
What is true about nonmetals?
they are malleable or ductile
they have a high luster
they conduct electricity and heat well
most of them are not gases at room temperature
If Lucy wants to test how different chemicals react to fire, what should her independent variable be?
the different types of chemicals
the colors produced when the chemicals are lit
the amount of each chemical she uses
the amount of time she lets them burn
How many atoms are in the following compound: C6H12O6?
3
12
24
6
Which element is a metal?
Oxygen (O)
Silicon (Si)
Tungsten (W)
Hydrogen (H)
