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WorksheetsUnit 2: Materials (Properties and Changes)
Total questions: 20
Worksheet time: 11mins
The temperature when a liquid becomes gas is called ...
freezing point
turning point
melting point
boiling point
The temperature when a solid becomes liquid is called ...
freezing point
turning point
melting point
boiling point
Which substance has the highest boiling point?
water
sodium carbonate
sodium chloride
iodine
Which substance has the lowest boiling point?
water
methane
sodium chloride
sodium carbonate
Which substance has the lowest melting point?
water
methane
sodium chloride
sodium carbonate
Which substances are liquid at room temperature?
water
methane
sodium chloride
iodine
Is boiling and evaporation the same?
YES
NO
Substances that can transfer heat well are called ... conductors.
thermal
electrical
magnetic
movement
Substances that can transfer electricity well are called ... conductors.
thermal
electrical
magnetic
movement
Which substance below that is not a thermal conductor?
copper
iron
cotton
silver
Which substances below are electrical conductors?
copper
iron
cotton
wood
Physical change is ...
reversible
irreversible
Chemical change is ...
reversible
irreversible
A substance that can dissolve in liquid is called ...
solute
solvent
solution
uniform
A substance that can dissolve material is called ...
solute
solvent
solution
uniform
A dissolving process will be faster if the liquid has ... temperature.
normal
cold
hot
warm
Does stirring make the dissolving process faster?
YES
NO
The substances that react together are called ...
reactants
products
evidences
reactions
The new substances that form are called the ...
reactants
products
evidences
reactions
Chemical changes are caused by ...
physical reaction
chemical reaction
