FIRST QUARTER RECAP

Which of the following BEST explain why oil stay on top of the water when you mix oil and water ?

• Oil is less dense than water

• Water is heavier than water

• Oil is heavier than water

• Water is less dense than oil

When will an object float ?

• When the object is less dense than the liquid on which it is placed.

• When the object is more dense than the liquid on which it is placed.

• When the density of an object is the same as the density of the liquid on which it is placed.

• None of these

What property of matter indicates that a substance or object is Biodegradable?

• density

• texture

• absorbency

• decaying

Different materials have different properties. They can be easily classified based on their own ________________.

What property explains why liquids go up the drinking straw when one end is placed in water?

• Capillarity

• Density

• Decay

• Porosity

Which of the following group can undergo decay easily or fast ?

• water bottle , empty soda can , plastic , banana peelings

• empty soda cans , glass , kangkong stem , left over meat

• broken pail , basin , glass , fish bone

• banana peelings , fish bone , kangkong stem, left over meat

A lady wipes off sweat from her forehead by using a cotton towel. Why did she use a towel to wipe off the sweat ?

Classify this object. Check all that applies

Rocks and pebbles

• Absorbent

• Float

• Non-absorbent

• Sink

Alex want to use a certain insecticide to free his room from cockroaches. Which of the following product labels will tell him how the product will be used?

• Brand name

• Expiration date

• Direction to use

• Manufacturers details

You want to use medicines to clean your wound. Which will tell you until when is the product safe and effective to use?