Revision sheet for · 2020. 11. 15. · By: Mrs. Raghad, Chemistry teacher Name: ………….……………… Grade 9 ( A , B , C ) Revision sheet for Grade (9) Chemistry FINAL

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By: Mrs. Raghad, Chemistry teacher

Name: ………….……………… Grade 9 ( A , B , C )

Revision sheet for

Grade (9)

Chemistry

FINAL Exam –Term1

2020/ 2021

The Material required for the Exam:

1- Textbook: Chapter:1 Lessons (1) , (2) and (3)

2- Interactive Book: Sec.(1-1), (1-2), (1-3)

3- Revision sheet.

NGSS:

HS-PS2.B.3

HS-ETS1-2

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A) Answer these questions: Chemistry is a Physical science: Sec. (1-1)

1. Write the 4 States of matter?

…………………………………………………………………………….

2. Explain what is the meaning of Chemistry?

……………………………………………………………………………..

3. Name 6 Branches in the study of Chemistry?

……………………..…… ………………………………….

……….………..…..…… ………………………………….

..…………………..……. …………………………………..

4. What type of substances do chemists work with?

………………………………….………..……………………………….

5. Write the 3 types of Scientific Researches?

…………………………………………..……

…………………………………….….………

…..………………………………….………..

B) Answer these questions: MATTER and PROPERTIES: Sec. (1-2)

1) What is the difference between?

An atom: ………………………...………………………………………………...

An element: ……………………….…………………………………………...….

Compound: ……………………………………………………………………….

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2) Compare between Extensive and Intensive properties? With examples

……………………………………………..…………..…..…………..…

…………………....……………………………………….………………

…………………..………………………………………..……………….

3) Write the ” definitions” of the following:

a) Solid: …………..…………………………………………..……………

b) Liquid: ………………………………...…………….………………….

c) Gas: …………………….………………………………….……………

d) Plasma: ……………………………………….…………….……..……

4) Answer these questions:

a) What is a reactant and a product?

…………..……………………………………..………………………….…

Complete this reaction: Iron (III) + Chlorine …………………………

b) Write the difference between a compound and a mixture?

………………………………...…………….………………………………

………………………………...…………….………………………………

c) Compare and contrast the properties of :

Homogeneous and Heterogeneous mixtures

……………………………………………………….……………………

………………………………...…………….…….………………………

………………………………...…………….…….………………………

d) What is separating mixtures?

……………….………………………………………….……..…………

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e) List the 3 methods of separating mixtures:

…………………………………………………

……………….……..……………

……………….……..……………

f) Write TRUE OR FALSE:

1. Every mixture is a solution …….….…….

2. Every solution is a mixture ……..……….

3. We can separate pure substance …………..

4. Salty water is a mixture …………….

5. Blood is a solution ……………….

C] Compare and contrast the properties of Charcoal and Carbon Dioxide:

Charcoal Carbon Dioxide

1. 1.

2. 2.

3. 3.

D] Write Physical change OR Chemical change:

1. Tearing a sheet of paper ……………………..…….…….

2. Burning a sheet of paper …………………….…….…….

3. Folding a sheet of paper …………………….…….…….

4. Melting a piece of ice ………….……….……….…….

5. Rusting a piece of iron ………….……….……….…….

6. Boiling a cup of water ………….…………...….…….

7. Molding a wire of cupper ……………………..….…….

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3) Answer these questions: ELEMENTS: Sec. (1-3)

A) What is the meaning of :

1- Group : …………………………………………………………………

2- Period: ………………………………………………………………….

3- Family: …………………………………………………………………

4- Metal : ………………………………………………………………….

5- Non metal: ……………………………………………………………..

B) Circle the right answer:

1. The Sucrose as a molecular formula is:

a. C12 H22 O11

b. C12 H22 O12

c. C6 H12 O6

d. C12 H12 O11

2. Examples of Metals are: a. Iron – Aluminum – Silver - Gold

b. Neon – Sulfur – Hydrogen - Gold

c. Oxygen – Hydrogen – Silver – Helium

d. Helium – Gold – Sodium – Hydrogen

3. The He, Ne, Ar, Kr, Xe, and Rn are located in Group…:

a. 17

b. 18

c. 15

d. 14

4. The Li, Na, K, Rb, Cs, and Fr are located in Group…….:

a. 3

b. 1

c. 2

d. 4

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5. The He, Ne, Ar, Kr, Xe, and Rn are ……:

a. Alkali metals

b. Alkaline earth metals

c. Noble gases

d. Halogens

6. The horizontal rows of elements in the periodic table are ….…:

a. Groups

b. Alkali metals

c. Periods

d. Halogens

7. The vertical columns of elements in the periodic table are ….…:

a. Groups

b. Alkali metals

c. Periods

d. Halogens

8. What is the group and period of Be in the periodic table?

a. Group 2 Period 2

b. Group 1 Period 2

c. Group 2 Period 1

d. Group 12 Period 6

9. What is the group and period of C in the periodic table?

a. Group 2 Period 14

b. Group 14 Period 2

c. Group 12 Period 4


GOOD LUCK !

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A) Answer these questions: Chemistry is a Physical science: Sec. (1-1)

6. Write the 4 States of matter?

…… Solid – Liquid – Gas – Plasma …….

7. Explain what is the meaning of Chemistry?

Is the study of the composition, structure, and properties of matter, the

processes that matter undergoes, and the energy changes that accompany these

processes.

8. Name 6 Branches in the study of Chemistry?

1. Organic chemistry—the study of materials with carbon

2. Inorganic chemistry—the study of non-organic materials

3. Physical chemistry—the study of the properties of matter

4. Analytical chemistry—the identification of materials

5. Biochemistry—the study of the chemistry of living things

6. Theoretical chemistry— predicting the properties of new materials

9. What type of substances do chemists work with?

Chemists work with Chemical materials or substances.

10. Write the 3 types of Scientific Researches?

Basic Research

Applied Research

Technological Development Research

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B) Answer these questions: MATTER and PROPERTIES: Sec. (1-2)

1) What is the difference between?

An atom: An atom is the smallest unit of an element that maintains the chemical

identity of that element. For example, an atom of carbon can be separated from

other carbon atoms and combined with other types of atoms such as oxygen

An element: An element is a pure substance that cannot be broken down into

simpler, stable substances. Carbon and gold are elements. An element is always

made of only one type of atom.

Compound: A compound can be broken down into simpler, stable substances.

Each compound contains atoms of two or more elements that are chemically

bonded.

2) Compare between Extensive and Intensive properties? With examples

Extensive properties depend on the amount of matter that is present. The volume

of an object is an extensive property because it changes when material is added

to, or taken away from, an object. Extensive properties include the volume,

mass, and amount of energy in an object

Intensive properties do not depend on the amount of matter present. Such

properties include melting point, boiling point, density, flammability,

reactivity, and magnetism. Intensive properties are the same for two samples of a

substance even if the samples are different in size.

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3) Write the ” definitions” of the following:

a) Solid: A solid has a definite volume and a definite shape. The particles can

vibrate back and forth, but they cannot change position. The particles are held

together because they are attracted to each other.

b) Liquid: A liquid has a definite volume but a shape that can change. Liquids

assume the shape of their containers. The particles in liquids are close together

but they can slide past one another. Because particles in a liquid move more

rapidly than the particles in a solid, attractive forces cannot hold the particles in

place.

c) Gas: A gas has neither a definite volume nor a definite shape. Gas expands to

fill any size container and takes the shape of the container. Gas particles move

much more rapidly and are farther away from one another compared with the

particles of liquids and solids. The attractive forces between gas particles are

unable to keep the fast-moving particles close together.

d) Plasma: A plasma has a high temperature and its matter is made up of charged

particles. Like a gas, a plasma takes the shape of its container. Unlike a gas, its

particles can be influenced by electrical charges. A lightning bolt is made of air

particles that have been converted into plasma.

4) Answer these questions:

a) What is a reactant and a product?

The reactant: The substances that react in a chemical change,

The product: The substances formed by the chemical change

Complete this reaction: Iron (III) + Chlorine

Iron + Chlorine Iron Iron (III) Chloride

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b) Write the difference between a compound and a mixture?

A compound can be broken down into simpler, stable substances. Each

compound contains atoms of two or more elements that are chemically bonded.

A mixture is a blend of two or more kinds of matter, each of which keeps its own

identity and properties. As a result, the properties of a mixture are a combination

of the properties of its components.

e) Compare and contrast the properties of :

Homogeneous and Heterogeneous mixtures

Homogeneous mixtures: if it is uniform in composition. In other words, a

homogeneous mixture looks the same throughout the entire mixture. Often it is

hard to tell that a homogeneous mixture contains more than one substance

Heterogeneous mixtures: if it is not uniform throughout. For example, in a

mixture of clay and water, heavier clay particles concentrate near the bottom of

the container. A sample from the bottom of the container will be different from a

sample from the top of the container.

f) What is separating mixtures?

Separating Mixtures: The parts of a mixture can usually be separated.

Using differences in properties of the substances making up the mixture

enables their separation. For example, passing some mixtures through a filter

or sieve will separate the components. Filters separate parts of a mixture

using the property of particle size.

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e) List the 3 methods of separating mixtures:

- Centrifuges

- Chromatography

- Paper chromatography.

f) Write TRUE OR FALSE:

1. Every mixture is a solution … FALSE

2. Every solution is a mixture … TRUE

3. We can separate pure substance … FALSE

4. Salty water is a mixture … TRUE

5. Blood is a solution … FALSE

C] Compare and contrast the properties of Charcoal and Carbon Dioxide:

Charcoal - C Carbon Dioxide – CO2

1. Flammable 1. NOT Flammable

2. Black - Solid 2. Colorless - Gas

3. Dark gray 3. Colorless Odorless

D] Write Physical change OR Chemical change:

1. Tearing a sheet of paper … Physical change

2. Burning a sheet of paper … Chemical change

3. Folding a sheet of paper … Physical change

4. Melting a piece of ice … Physical change

5. Rusting a piece of iron … Chemical change

6. Boiling a cup of water … Physical change

7. Molding a wire of cupper …Physical change

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3) Answer these questions: ELEMENTS: Sec. (1-3)

A) What is the meaning of:

6- Group: The vertical columns of the periodic table, the Groups. = 18

7- Period: The horizontal rows of elements in the periodic table, the periods = 7

8- Family: The elements in a group are referred to a family.

9- Metal: A metal is an element that is a good electrical conductor and a good

heat conductor, most metals are solids. Most metals are also malleable, they

can be hammered or rolled into thin sheets. Metals also tend to be ductile,

making it possible for them to be drawn into a fine wire. Metals behave this way

because they have high tensile strength, the ability to resist breaking when

pulled. Most metals also have a silvery or grayish white luster, or shine.

10- __________________________________________________ Non

metal: A nonmetal is an element that is a poor conductor of heat and electricity.

The periodic table includes many more metals than nonmetals. Many nonmetals are

gases at room temperature.

11- A metalloid: is an element that has some characteristics of metals and some

characteristics of nonmetals. As you look from left to right on the periodic table,

you can see that the metalloids are found between the metals and the

nonmetals. All metalloids are solids at room temperature. They tend to be less

malleable than metals but not as brittle as nonmetals. Some metalloids, such as

antimony, have a somewhat metallic luster.

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B) Circle the right answer:

1. The Sucrose as a molecular formula is:

a. C12 H22 O11

b. C12 H22 O12

c. C6 H12 O6

d. C12 H12 O11

2. Examples of Metals are:

a. Iron – Aluminum – Silver - Gold

b. Neon – Sulfur – Hydrogen - Gold

c. Oxygen – Hydrogen – Silver – Helium

d. Helium – Gold – Sodium – Hydrogen

3. The He, Ne, Ar, Kr, Xe, and Rn are located in Group…:

a. 17

b. 18

c. 15

d. 14

4. The Li, Na, K, Rb, Cs, and Fr are located in Group…….:

a. 3

b. 1

c. 2

d. 4

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5. The He, Ne, Ar, Kr, Xe, and Rn are ……:

a. Alkali metals

b. Alkaline earth metals

c. Noble gases

d. Halogens

6. The horizontal rows of elements in the periodic table are ….…:

a. Groups

b. Alkali metals

c. Periods

d. Halogens

7. The vertical columns of elements in the periodic table are ….…:

a. Groups

b. Alkali metals

c. Periods

d. Halogens

8. What is the group and period of Be in the periodic table?

a. Group 2 Period 2

b. Group 1 Period 2

c. Group 2 Period 1


9. What is the group and period of C in the periodic table?

a. Group 2 Period 14

b. Group 14 Period 2

c. Group 12 Period 4


GOOD LUCK !

Documents

Revision sheet for · 2020. 11. 15. · By: Mrs. Raghad, Chemistry teacher Name: ………….……………… Grade 9 ( A , B , C ) Revision sheet for Grade (9) Chemistry FINAL