FIRST QUARTER EXAMINATION IN SCIENCE VI

1. Which of the following statements describes a mixture?

• It is composed of different substances.

• It is made up of different elements and compounds

• It consists of two or more substances that are physically combined.

• It is a combination of two or more substances that are chemically combined.

In what type of mixture are the substances evenly distributed throughout the mixture?

• heterogeneous

• homogeneous

• solute

• solvent

A homogeneous mixture is a combination of two substances which produce a uniform or the same appearance in their product after the mixing procedure. Which of the following shows uniform appearance of a product?

• halo-halo

• French fries

• pizza

• vinegar

Which heterogeneous mixture whose particles settled out of the mixture when left undisturbed?

• colloid

• solution

• solvent

• suspension

Which of the following statements BEST describes colloids?

• Formed by mixing different kind of solutions.

• Have molecules that are big enough to settle at the bottom.

• Mixtures of two or more substances that can easily be separated.

• Composed of molecules bigger than a solution but smaller that a suspension.

Which of the following is NOT a uniform mixture?

• salt

• steel

• sugar

• toy box

What makes spaghetti a heterogeneous mixture?

• It is delicious and mixed well.

• Its ingredients can be distinguished easily.

• It has a main component or base ingredient.

• Its ingredients cannot be distinguished easily.

What property of a suspension that is different from a solution or a colloid?

• Suspensions are colorless

• A suspension is always clear.

• The particles of a suspension reflect light.

• If left to rest, the particles of a suspension will settle down.

It is a colloid which consist of gas dispersed in liquid foams and solid foams.

• aerosol

• emulsion

• foam

• sol

Try mixing the following liquids with water in different containers. Which of the following liquids is immiscible with water?

• kerosene

• liquid soap

• soy sauce

• vinegar