1st Summative Test

What are consists of two or more substances that are physically combined called?

• mixture

• compound

• substance

• matter

What is a mixture that exists in a single phase and has a uniform composition.

• homogeneous

• heterogenous

• suspension

• colloids

Which sample of mixtures is a Homogeneous mixture?

• sand and pebbles

• salt and water

• water and powdered chocolate

• salad and coke

Which observation describes the characteristic of a Heterogeneous mixture.

• components appeared as one

• components are not distinguishable

• The mixture shows one phase

• components are visible and particles are not dispersed

What mixture has NO uniform composition and exists in two or more phases?

• matter

• pure substances

• heterogenous

• homogenous

Which of the following is NOT soluble or does not dissolve in water?

• Naphthalene

• salt

• sugar

• vinegar

In solutions, the additive is called the____, while the substance that dissolves the first is called the_____.

• solute: solvent

• solvent: solute

• seasoning: water

• solubility:concentration

If you make lemon juice with honey and water, which is the solvent?

• lemon juice

• water

• honey and juice

• honey

What substance is used to cure or prevent diseases?

• Medicine

• Fungi

• Surfactant

• Detergent

10. Which of these common household materials is the most flammable

• soap

• perfume

• water

• detergent