Download 2nd nine weeks benchmark review homework

Due Date: December 2nd, 2016
Name:______________________________
2nd Nine Weeks Review Homework
Which subatomic
particles are found in the
nucleus of an atom?
a-protons and neutrons
b- just protons
c-electrons and neutrons
d- electrons and protons
Which is true about
density?
a- changes with each
different amount of a
substance
b- stays the same no
matter the size of the
sample
c- is determined by the
substances height
d- is a chemical property
1 km= 1000__
1m = 100__
a- 1km=1000mm
1m=100cm
b- 1km=1000m
1m=100mm
c- 1km= 1000cm
1m=100mm
d- 1km=1000m
1m=100cm
The volume of water in a
pot decreases and water
droplets form on the lid of
the pot. What is
happening to the water?
Which of the following
would most improve the
validity of an experiment?
a- increasing the number
of variables
b- decreasing the range of
the independent variable
c- repeating the
experiment several times
d- produce a graph
Anne spread butter on her
warm toast in the morning
and it melts into the bread
this is an example of a/an-
On the periodic table,
an element is arranged
by it ___which is equal
to the number of ___ in
the nucleus.
a- atomic number,
neutrons
b- atomic number,
protons
c- atomic mass,
neutrons
d- atomic mass, protons
When the physical
composition of a
substance changes, the
chemical composition-
The particle theory of
matter suggests thata- all molecules are in
constant motion
b- molecules in solids
don’t move
c- only molecules of
gases move
d- only molecules of
liquids have motion
Which atomic model best
represents our current
understanding of the
atom?
When an acid and a
base of the same
strength are combined a
___ is formed.
Frozen CO2 or Dry Ice
goes directly from a solid
to a gas. This change of
state is called-
a- acid
b- salt
c- base
d- ion
a- vaporization
b- sublimation
c- deposition
d- melting
Calcium and fluorine
combine to form
calcium fluoride. What
is calcium fluoride?
Which of the following is
an example of an
element?
Which group of elements
contains the most stable
atoms?
a- CH
b- H2O
c- CO2
d- O
a- halogens
b-noble gases
c-alkali metals
d- transition metals
The vertical columns on
the periodic table are
called-
The small number behind
an elements chemical
symbol is called-
a- metals
b- groups/families
c- rows
d- periods
a-coefficients
b-reactants
c- products
d- subscripts
What kind of bond occurs
when two nonmetals
chemically react?
Which subatomic particle
is involved in chemical
bonding?
a- ionic bond
b- covalent bond
c- atomic bond
d- metallic bond
a-quark
b-neutron
c-proton
d- electron
a- iron rusting
b- boiling water
c- dissolving salt in water
d- sawing wood
Which of the following
elements is a nonmetal?
Why is water known as the
universal solvent?
Metalloids are found on
the periodic table-
a- Boron (B)
b- Beryllium (Be)
c- Sulfur (S)
d- Sodium (Na)
a- It dissolves all known
substances.
b- It dissolves only solid
substances.
c- It dissolves the greatest
number of substances.
d- It dissolves substances
faster than all other
solvents.
The left side of a chemical
equation are called the-
a- at the top left side
b- across the bottom
c- diagonally, across the
top right side
d- on the far right edge
Cleaners and fertilizers are
known to be-
Bohr’s model of the
atom showed electrons-
a-coefficients
b-reactants
c- products
d- subscripts
a-basic
b-dangerous
c-acidic
d- neutral
a- randomly outside the
nucleus
b- in fixed orbits
c- in the nucleus
d- in clouds
Combustion reactions
produce___
Photosynthesis is a ___
reaction because it takes
in energy.
What category of
elements follows the
zigzag line on the
periodic table?
a- carbon dioxide and
hydrogen
b- water and oxygen
c- water and carbon
dioxide
d- oxygen and hydrogen
a- amount of substance
b- unknown substance
c- temperature
d- volume
Which of these is the
freezing point of water in
correct SI units?
a- cutting wood
b- discharging a battery
c- digging dirt
d- melting ice
a-double
b-synthesis
c-single
d- decomposition
a-salt
b-acid
c-water
d-base
a- also changes
b- does not change
c- becomes more
reactive
d- becomes unbalanced
Which is an example of a
chemical change?
a- ionic bond
b- covalent bond
c- atomic bond
d- metallic bond
A + B > AB is a __
reaction.
A substance that has a pH
of 3 and H+ ions is a(n)
a- chemical change
b- nuclear change
c- physical change
d- energy change
a- vaporize and then
freeze
b- vaporize and then
condense
c- condense and then
vaporize
d- freeze and then
condense
Which of these is not a
physical change?
A bond formed from a
metal losing an electron
and a nonmetal gaining
an electron is a-
Students measured the
amount of an unknown
substance dissolved in
water at different
temperatures. What is
the independent
variable?
a- 0 Celsius
b- 0 Fahrenheit
c- 32 Fahrenheit
d- 273 Celsius
a- endothermic
b-exothermic
c-subthermic
d- geothermic
a- a mixture
b- an organic molecule
c- a solution
d- a compound
a-nonmetals
b-groups
c-metalloids
d- metals
a-planetary model
b-electron cloud model
c-bohr model
d- plum pudding model
A neutral substance has a
pH of –
a-0
b-10
c-2
d-7