Q1_WRITTENWORK3

1. Mixture is ________________.

• a chemically combined substance.

• a combination of elements to make a new substance.

• a combination of substances where new substances are formed

  through a reaction.

• a combination of substances in which the atoms of the substance DO NOT chemically combine

Mixtures can be classified into 2 types, homogeneous and heterogeneous. They are different because ______________.

• heterogeneous has 2 substances while homogenous has 3 or more substances.

• homogeneous looks the same throughout, with heterogeneous you can see the different parts.

• heterogeneous looks the same throughout, with homogeneous you can see the different parts

• they are the same, just different names

Which of these is a pure substance?

• bread

• table salt

• garden soil

• sea water

What is the simplest form that cannot be broken down to anything simpler?

• element

• solution

• compound

• colloids

Which of the following is a homogeneous mixture?

• oil and water

• sand and water

• halo-halo

• air

This type of mixture contains two or more substances that are visibly distinguishable.

• homogeneous

• heterogeneous

• solution

• suspension

A substance which consists of two or more elements which have been combined chemically is called _______________.

• A. element

• B. compound

• C. mixture

• D. atom

Which describes the smallest particle of a compound that can exist and still retain the characteristic chemical properties of a substance.

• molecule

• atom

• electron

• nucleus

Which of the following is a way in which elements and compounds are similar?

• Elements and compounds are both pure substances.

• Elements and compounds are both listed on the periodic table.

• Elements and compounds are both made up of different kinds of atoms.

• Elements and compounds can both be broken down by physical changes.

Which of the following is represented by a chemical formula?

• Element

• Compound

• Homogenous mixture

• Heterogenous mixture