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WorksheetsPhysical Science Ch. 2
Total questions: 31
Worksheet time: 16mins
Which of the following are pure substances?
solutions
compounds
homogeneous mixtures
colloids
Which of the following is NOT a pure substance?
milk
oxygen
water
carbon dioxide
A substance that is made up of only one kind of atom is a
compound
homogeneous mixture
element
solution
If an unknown substance CANNOT be broken down into simpler substances, it is
compound
element
made of one kind of atom
both b and c
If a material contains three elements joined in a fixed proportion it is a
mixture
solution
atom
compound
Water is a compound because it
can be broken down into simpler substances
always has 2 hydrogen atoms for each oxygen atom
is made of water atoms joined together
both a and b
Which of the following is a mixture?
carbon dioxide
silicon
silicon dioxide
sand
Which of the following is a characteristic of a mixture?
has varying properties
has a fixed composition
contains only pure substances
both a and b
A mixture that appears to contain only one substance is a
homogeneous mixture
heterogeneous mixture
conpound
element
Which of the following is a heterogeneous mixture
water in a swimming pool
sugar water
a jar of mixed nuts
stainless steel
Which of the following is malleable?
glass
pottery
ice
gold
Which of the following has the highest viscosity?
corn syrup
milk
water
orange juice
A substance has a melting point of 0 Celsius and a boiling point of 100 Celsius. The substance is most likely
water
hydrogen
gold
table salt
A material that is malleable and conducts electricity is most likely
wood
metal
clay
wax
Which of the following materials is useful for making molds because it has a low melting point?
wood
metal
clay
wax
Filtration can be used to separate mixtures based on
their boiling points
their densities
their melting points
the size of their particles
Distillation can be used to separate mixtures based on
their boiling points
their densities
their melting points
the size of their particles
What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter
filtration
distillation
straining
screening
When a physical change in a sample occurs, which of the following does NOT change?
shape
temperature
volume
composition
Which of the following is a physical change?
sawing a piece of wood in half
burning wood
rust forming on iron
copper roof changing color from red to green
Flammability is a material's ability to burn in the presence of
hydrogen
nitrogen
oxygen
carbon dioxide
A substance that has high reactivity
easily combines chemically with other substances
burns in the presence of water
displaces dissolved oxygen
has a high boiling point
Which of the following is not a clue that a chemical change has occurred
change in color
production of a gas
formation of a precipitate
change in shape
During which of the following chemical changes does a precipitate form?
vinegar is added to baking powder
lemon juice is added to milk
lemon juice is added to water
a banana ripens
Which of the following is a chemical change?
ice melting
ice being carved
water boiling
water breaking down into hydrogen and oxygen
Which of the following is a clue of a chemical change?
iron changes color when heated
gas bubbles form in bioling water
balls of wax from when melted wax is poured into ice water
a gas forms when vinegar and baking soda are mixed
Oxygen is a
element
compound
homogeneous mixture
heterogeneous mixture
Vinegar is a
element
compound
homogeneous mixture
heterogeneous mixture
Salsa is a
element
compound
homogeneous mixture
heterogeneous mixture
Water is a
element
compound
homogeneous mixture
heterogeneous mixture
Milk is a
element
compound
homogeneous mixture
heterogeneous mixture
