WorksheetsAtoms, elements and the periodic table - part 2
Total questions: 12
Worksheet time: 6mins
An element is made up of only one kind of ___________.
isotope
atom
plastic
The periodic table list ____________.
common molecule
compounds
elements
Isotopes can have the same __________.
mass number
atomic number
number of subatomic particles
Most elements are ______________.
metals
nonmetals
metalloids
On the periodic table, metalloids are found
on the left side
on the right side
between the metals and nonmetals
A ____________ has no luster and is a poor conductor.
metals
metalloids
nonmetals
Many __________ can conduct heat and electricity, but they are not the best conductors.
metals
metalloids
nonmetals
The ______________ are all malleable, have luster and are good conductors.
metals
metalloids
nonmetals
The elements in a _______________ are always combined in the same proportion by mass.
mixture
solution
compound
The compound ammonia contains three atoms of hydrogen for every atom of nitrogen, o the chemicle formula for ammonia is _____________.
N H3
N3 H3
N3 H
An example of a homogenous mixture is ____________.
vegetable soup
air
granite rock
A mixture is heterogenous if ____________.
it is made of two compounds
one of its parts is water
you can see its individual parts
