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WorksheetsSUMMATIVE TEST I SCIENCE WEEK 3
Total questions: 25
Worksheet time: 24mins
Which of the following is a chemical change?
making a lemonade
melting of sugar
cracking of egg
phase change
Conditions under which changes in materials happen are absence or presence of oxygen and ________.
absorption of heat
application of oxygen
Under which condition does the change in the picture take place?
presence of oxygen
absence of oxygen
application of heat
Under which condition/s does burning take place?
presence of oxygen
absence of oxygen
application of heat
Analyze the picture. What type of change happened? What is the evidence shown? Under what condition does this happen?
chemical change; change in color; presence of oxygen
physical change; change in color; absence of oxygen
chemical change; release of gas; presence of oxygen
physical change; change in color; presence of oxygen
Analyze the picture. What type of change happened? What is the evidence shown? Under what condition does this happen?
chemical change; change in size; application of heat
physical change; change in phase; presence of oxygen
physical change; change in phase; application of heat
chemical change; change in state; absorption of heat
What change will happen to the slices of potato if they will be exposed to oxygen in the air?
Color will change from brown to white
Color will change from white to brown
The color will not change
No changes in color
2. What causes the rusting of iron nails or iron made materials in a wet cloth?
presence of heat
absence of heat
presence of oxygen
absence of oxygen
4. The candles melted by the application of heat. What change took place when solid candles became liquid?
chemical
mechanical
no change
physical
6. The eggplant/apple in the experiment turned its color from white to brownish. Which statement is NOT TRUE?
The presence of oxygen caused change in its color.
The absence of oxygen caused change in its color.
The color of an apple/eggplant changed when it is exposed to
oxygen in the air.
There is oxidation that happened when apple/eggplant was sliced and exposed in the air.
Water is the primary cause of rust because water contains _____?
Oxygen
Chloride
carbon
hydrogen
8. Joram noticed that when he mopped the floor using wet rugs, the moist in the floor disappeared after few minutes. What is the reason why the floor became dry?
presence of heat
absence of heat
presence of water
absence of temperature
Any time something burns, it is going through a
chemical change
physical change
On a camping trip, Mr. Markowitz roasts a marshmallow in the campfire. He notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place AND how does Mr. Markowitz know?
A chemical change because the marshmallow changed in taste, color, and smell
A chemical change because the marshmallow was heated up.
Only a physical change because the marshmallow changed in size
No change because the marshmallow is not a new substance
What makes the ice cream melt?
heat
refrigerator
cooler
freezer
What change happens when solid materials heated?
chemical change
change in odor
physical change
no change at al
Sun is the main source of ____________
water
air
heat
flood
Which of the following is a physical change?
burning of paper
cutting of paper
rusting of iron
cooking of food
Fireworks is an example of_______
physical Change
chemical Change
Lighting a match is an example of____________________.
physical change
chemical change
Slicing a bread is an example of ______________________.
physical Change
chemical change
