Physical and Chemical Properties Worksheet
State whether the properties given below are physical or chemical properties. If they are
physical properties, state if they are quantitative or qualitative.
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Milk sours when acid is added to it.
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Wood burns.
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Mike is 1.97 m tall.
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Oxygen supports combustion.
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Hydrogen is a colourless gas.
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Hydrogen gas is 1/6 as dense as oxygen gas.
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Nitrogen is an odourless gas.
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The action of a drain cleaner on grease is…
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Lead is a softer metal than iron.
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Diamond is the hardest natural substance known.
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The melting point of ice is 0˚C
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Sodium is a soft, silvery metal.
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Iodine dissolves in alcohol.
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The density of alcohol is 800 kg/m3.
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Phosphorus ignites when exposed to air.
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Antacids relieve stomach aches.
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The cat’s fur felt silky.
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An iodine solution kills bacteria.
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A powder can be formed into a pellet by pressing.
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Sugar dissolves in coffee.
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Physical and Chemical Changes
In a PHYSICAL CHANGE, the form, or the size, or the state of the material is changed, but
not the material itself.
In a CHEMICAL CHANGE, the type of material must change because the atoms are
rearranged which makes the molecules (groups of chemically combined atoms) different.
Classify the
following as a physical or chemical change by using the letter ‘P’ or ‘C’:
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the rusting of an iron nail
the evaporation of water from a lake
the toasting of bread
the formation of clouds
the baking of a cake
the frying of an egg
butter is melted in a frying pan
the crushing of stone
the burning of wood
the drying of house paint
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the fermentation of sugar
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the explosion of nitroglycerine
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the rotting of wood
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the shrinkage of ice cubes in the
freezer
a glass is broken
a metal bar is filed down
silver tarnishes to a black colour
sugar is dissolved in coffee
milk becomes sour after being left out
an iron nail is picked up by a magnet
charcoal in a bbq is burned
water in a kettle is boiled
old bread becomes green and mouldy
an ice cube melts in a glass of pop
the burning of a candle
a match is lit
wet clothes dry
a firecracker explodes
wet falling snow changes to freezing
rain
food is digested in your stomach
a bronze statue tarnishes to a green
colour
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a tooth decays
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a Bunsen burner is lit
the water in a lake freezes
gasoline ignites
a water tap in a sink is turned on