Exercises to the text "Matter"

1. Answer the following questions:

  1. What kinds of properties are used to describe matter?
  2. What are elements, and how do they relate to compounds?
  3. What are the properties of a mixture?
  4. How are elements and compounds related?
  5. What are the two ways in which mixtures differ from compounds?

 

2. Classify each of the following properties by writing physical or chemical on the line.

____________________ 1. Texture

____________________ 2. Ability to react with other substances

____________________ 3. Ability to conduct heat

____________________ 4. Hardness

____________________ 5. Lack of ability to rust

____________________ 6. Physical state

 

3. Match each term with its definition by writing the letter of the correct definition on the line.

  1. ____ matter
  2. ____ chemistry
  3. ____ substance
  4. ____ atom
  5. ____ chemical bond
  6. ____ molecule
  7. ____ chemical formula
  8. ____ heterogeneous
  9. ____ homogeneous

10.____ solution

a. the basic particle of an element

b. a mixture in which you can see the different parts

c. anything that has mass and takes up space

d. a particle formed when two or more atoms combined

e. a single kind of matter that is pure

f. a kind of homogeneous mixture

g. the study of the properties of matter

h. a mixture in which different parts cannot be seen

i. tells the elements and ratio of atoms in a compound

j. the force of attraction between two atoms.

 

4. Translate the following sentences:

  1. I won't take up much of your time.
  2. This bed takes up too much space.
  3. Molecules are made up of atoms.
  4. Waste products break down into low-level toxic materials.

 

5. Insert preposition if necessary:

  1.  A chemical property is the ability of a substance to change … different substances.
  2. A compound may be represented … a chemical formula.
  3. A physical property is observed … changing a substance into another substance.
  4. A solution is an example … a homogeneous mixture.
  5. A substance is a single kind … matter that is pure.
  6. Air is a solution … nitrogen gas, oxygen gas, plus small amounts of other gases.
  7. All matter is made … of elements.
  8.  An atom is the basic particle that makes … an element.
  9. An element is a pure substance that cannot be broken … into any other substance.

10.Atoms of most elements can combine … other atoms.

11.Chemistry is the study … the properties of matter and how matter changes.

12.Each element is identified … its specific physical and chemical properties.

13.Each substance in a mixture keeps …its individual properties.

14.Mixtures differ … compounds in two ways.

15.When elements are chemically combined, they form compounds having properties that are different … those of the uncombined elements.

 

6. Put in the necessary form of the verb:

observe, make up, break down, identify, combine, represent, show, differ, separate.

  1. A chemical formula … the elements in the compound and the ratio of atoms.
  2. A compound … by a chemical formula.
  3. A physical property … without changing a substance into another substance.
  4. All matter …of elements.
  5. An element is a pure substance that cannot … into any other substance.
  6. Atoms of most elements … with other atoms.
  7. Each element … by its specific physical and chemical properties.
  8. Each substance in a mixture … its individual properties.
  9. Mixtures … from compounds in two ways.

10.Mixtures … into their components.

11.When elements …, they form compounds having properties that are different from those of the uncombined elements.