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WorksheetsWildcats Chemistry
Total questions: 36
Worksheet time: 18mins
What is the difference between elements and atoms?
atoms that are all the same make up elements
different atoms make up an element
elements are bigger than atoms
atoms have a nuclei and elements do not
What is a molecule?
a molecule is a single atom
a molecule is more than one atom bonded together
a molecule is a metal bonded with a non-metal
a molecule is something that dissolves
Which of these is a CHEMICAL property of gold?
gold does not react with oxygen
shiny lustre
metallic looking
gold is malleable
The overall charge of a stable atom is
positive
negative
neutral
variable
An ion
has a different number of electrons than protons
has a different number of neutrons than electrons
has different number of neutrons than protons
has different number of neutrinos than quarks
An isotope is when there are
a different number of neutrons than protons
atoms with the same number of protons but different number of neutrons
different number of electrons compared to valence electrons
more orbitals than protons
If elements are in the same group on the periodic table
they have similar chemical properties
they have different chemical properties
they have the same number of valence electrons
they have the same orbitals
Which of the following are characteristics of metals?
ductile
malleable
brittle
good conductors
If something is malleable then
it can be made into thin strings and wire
it has a metallic lustre
it breaks into pieces when hit
it can be shaped and reshaped
Something that is ductile
can be made into thin wire
can be shaped and re-shaped
has a metallic lustre
has a low melting point
An element's ________ identifies the element.
atomic number
atomic mass
number of neutrons
number of electrons
Which atomic particles are gained and shared in chemical reactions?
protons
electrons
neutrons
quarks
Valence electrons are
the total number of electrons
the innermost electrons
the electrons in the outer shell
the electrons in the nucleus
An element that has both metallic and non-metallic properties is called a(n)
alloy
metalhead
alkali metal
metalloid
Which of the following are inner transition metals?
lanthanides
transition metals
actinides
metalloids
Which two groups react quickly and release lots of energy?
hallogens and noble gases
alkali metals and alkaline earth metals
hallogens and lanthanides
hallogens and alkali metals
A property of all metals is
they are all solids
they are all good conductors
they are all shiny
they are all brittle
Potassium has 19 protons, 19 electrons and an atomic mass of 39. How many neutrons does it have?
19
38
20
39
Noble gases are so stable because
nothing gets them down
they have the same protons, neutrons and electrons
they have a full valence shell
they have the maximum number of orbitals
Bromine has 35 protons, 35 electrons and 45 neutrons. What is its approximate atomic mass?
35
70
115
80
What type of bonding would you expect between metals and non-metals?
metallic
ionic
covalent
isotopic
Which type of bonding involves the stealing of electrons?
ionic
covalent
metallic
gelatinous
When electrons are lost or gained then what is created?
isotopes
ions
radioactive nuclei
new elements
With MgO (magnesium oxide) what Mg ion is created?
Mg+
Mg-
Mg2+
Mg2-
What type of bonding is shown in the diagram?
ionic
covalent
metallic
isotopic
Name the element.
Silicon
Sodium
Potassium
Chlorine
A Lewis dot structure shows you:
the total number of electrons
the electron configuration
the type of ion
the number of valence electrons
Name the group or family:
noble gases
alkali metals
alkaline earth metals
hallogens
Which family has a metal, metalloid and non-metal?
alkali metals
noble gases
hallogens
oxygen group
The Lanthanides and Actinides are on the bottom of the Periodic Table because
they are not real elements
they do not occur in nature
it saves space
they have not been discovered yet
What happens when you go down a period?
you add a valence electron
you make a new isotope
you add a neutron
you add an orbital
What happens when you move from left to right on the Periodic Table in the same period?
you add a valence electron
you add one atomic mass unit
you add an orbital
you add a new period
Which family reacts violently with water?
the noble gases
the hallogens
the alkali metals
the transition metals
The elements with an atomic number greater than 92 were made using
high temperatures
a particle collider
gamma rays
radioactive space metoers
Which family make good semi-conductors for computers?
transition metals
metalloids
noble gases
non-metals
Which is true about atomic mass?
the weights are relative
the weights are an average of the isotopes
it is a measure of how heavy the nucleus is
you find it by adding the protons, neutrons and electrons
