WorksheetsAtoms & Chemical Bonds
Total questions: 25
Worksheet time: 12mins
The order of elements in the modern periodic table is based on an element's
atomic number
name
chemical symbol
atomic mass
Elements within the same group in the periodic table have similar properties because they have the same number of
protons
neutrons
ions
valence electrons
Ionization refers to the process of
changing from one period to another
losing or gaining protons
turning lithium into fluorine
losing or gaining electrons
Elements in a family often have similar
appearance
atomic mass
total number of electrons
total number of protons
Which statement about 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 form negative ions with a 1- charge
An atom's mass number equal the number of
protons plus the number of electrons
protons plus the number of neutrons
protons
neutrons
Which of the following is not a property of water?
Hydrogen bonds exist only in the solid state.
It can dissolve ionic and polar molecules.
It has a high surface tension.
The solid state is less dense than the liquid state.
Water's unique properties arise because of its ability to form strong:
covalent bonds
dipole bonds
hydrogen bonds
ionic bonds
Ice floats on water because
liquid water is less dense than ice
water's surface tension is strong enough to support the ice
there is oxygen dissolved in liquid water
the molecules in ice are farther apart than the molecules in liquid water
A property of water that is vital to supporting life is that:
water is transparent
water can dissolve a wide variety of substances
water is found naturally on Earth as a liquid, solid, and gas
water molecules are not charged
Cohesion is:
exemplified by the action of water droplets sticking to your drinking glass
a property that allows water to dissolve certain substances
a phenomenon that occurs only at the surface of water
an attraction between molecules of the same kind
Drops of dew on a leaf owe their spherical appearance to:
cohesion
adhesion
the density of water
cohesion, adhesion, and surface tension
A frozen lake in winter with fish swimming below the surface is possible because of which property of water:
cohesion
adhesion
low molecular weight
polarity
What charge are protons?
positive
negative
neutral
What charge are electrons?
positive
negative
neutral
What charge are neutrons?
positive
negative
neutral
Electrons orbit around the nucleus of an atom in layers. What are these layers called?
Valences
Bonds
Shells
Floors
Where are valence electrons found?
in the nucleus of an atom
in the outer shell of an atom
in the inner shell of an atom
none of the above
What type of chemical bonds share electrons between atoms?
ionic
elemental
covalent
electronic
What type of chemical bond is formed when one atom donates an electron to another atom?
ionic
elemental
covalent
electronic
Which of the following is true about covalent bonding?
Up to 8 electrons can be donated from one element to another
electrons are donated from the outer shell
electrons are shared in pairs
none of the above
Which is true about an atom that has 6 of 8 electrons in its outer shell?
It will want to give up 2 electrons
It will want to gain 2 electrons
It will want to give up 6 electrons
It will want to gain 6 electrons
What is the symbol for potassium? (Standard capitalization rules apply)
(a)
What is the symbol for Iron? (Standard capitalization rules apply)
(a)
Water molecules are an example of which type of bonding?
covalent
ionic
