WorksheetsSCIENCE 5 qtr 1 Week 4
Total questions: 11
Worksheet time: 22mins
Rusting of iron easily occur in which condition?
near the seashore
away from the seashore
near the building
away from the building
Which of these processes increases the amount of carbon dioxide in the air?
burning garbage only
forest fire only
using gasoline to fuel a car only
all of the above
Which of these will be the effects of motor vehicles to the environment?
They burn the environment.
They improve the environment.
They produce useful chemicals.
They produce harmful chemicals.
How should we properly dispose our biodegradable waste?
throws them in the river
burn them
put them in compost pit
place them in plastic container
Production of heat and light is an evidence that a chemical change may have
occurred.
true
false
maybe
neither a nor b
Which condition is needed to freeze water?
the absence of heat energy
the presence of heat energy
the release of light energy
the absorption of sound energy.
Why should you keep a butter away from the fire?
to keep it solid
to keep it liquid
to keep its taste
to keep it fresh
The diagram shows solid+heat=liquid. Which process does it mean?
freezing
melting
evaporating
condensing
When the substance of a material remains the same after it has changed, it
brings about which kind of change?
chemical change
physical change
property mixture
substance mixture
Which is true about physical change?
A new material is formed.
It cannot be brought back to original form.
No new material is formed.
The form of matter does not change.
Rusting of iron easily occur in which condition?
near the seashore
away from the seashore
near the building
away from the building
