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Worksheets8G L1-2
Total questions: 35
Worksheet time: 52mins
Identify the following elements as metal or non-metal.
Hydrogen
metal
non-metal
Mercury
non-metal
metal
Oxygen
metal
non-metal
which of the following is the most ductile metal?
silver
gold
copper
sodium
which of these is the most reactive metal?
magnesium
platinum
sodium
gold
The property of metal by which it can be drawn into wires is
sonority
ductility
malleability
conductivity
The solution of ash magnesium ribbon is-------in nature.
acidic
neutral
basic
none of these
Metals are shiny, good conductors, malleable, and ductile.
True
False
Metalloids have the same properties as
metals.
nonmetals.
neither, they are a combination of both.
When describing physical properties of elements the term shiny is scientifically described as
pretty
lustrous
sleek
Nonmetals are described as which of the following?
dull, insulating, and brittle
lustrous, malleable, ductile
Metals are mostly found on which side of the periodic table?
Left
Right
The periodic table contains metals, non metals, and metalloids.
True
False
Metal
Nonmetal
When a metal is shiny, we say it is ___________.
lustrous
malleable
ductile
conductive
When a metal can be pounded into thin sheets, we say it is ___________.
lustrous
malleable
ductile
conductive
When a metal can be made into thin wires, we say it is ___________.
lustrous
malleable
ductile
conductive
When a metal can allow heat or electricity to flow through it, we say it is ___________.
lustrous
malleable
ductile
conductive
Which of the following metals conducts heat and electricity the best?
aluminum
copper
steel
nickel
Which state of matter are most metals at room temperature?
solid
liquid
gas
degrees
List four factors that affects the rate of a reaction
temperature
concentration
surface area
volume
catalysts
How does a catalyst work in speeding up a reaction?
By lowering the activation energy or reaction
by giving them more energy
by making them more available
Why does a higher concentration increase the rate of reaction?
it increases the amount of reactants
it lowers the activation energy
it increases the energy of particle collisions
it increases the frequency of particle collisions
Why does a higher temperature increase the rate of a reaction?
it increases both the frequency and energy of particle collisions
it only increases the frequency of particle collisions
it only increases the energy of particle collisions
it reduces the activation energy of the reaction
A substance that increases the rate of a reaction without being used up during the reaction is called a
catalyst
product
reactant
solute
What is the name given to a catalyst in the human body?
Biology
Catalyst
Chemical
Enzyme
When a catalyst is added to a reaction the rate of reaction,,,
Increases
Decreases
Does not change
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?
Red, because the activation energy is larger
Blue, because the activation energy is lower
both reaction progress at the same rate
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is using a Catalyst?
Red, because the activation energy is larger
Blue, because the activation energy is lower
both reaction progress at the same rate
