Chem Lesson Set

What is Chemistry?

Chapter

-

1

What is …..?

1

Objectives

of

the

Lesson

• To review the some key terms such as science, technology,

chemistry

• To understand the safety rules in the chemistry laboratory
• To learn the Hazard Warning Symbols

2

What is Chemistry?

Warming

up

• What is ‘

science’?

• What is difference between ‘

science’ and ‘

technology’?

3

What is Chemistry?

Introduction

• From ancient times until today,

acquired

knowledge has been collected

on a

regular

basis.

• This accumulated knowledge is known simply as

science.

4

What is Chemistry?

•The studies conducted and tested

systematically, hypothesized and shared

with people are called scientific studies.

• The applications of scientific principles

in the service of mankind is called

technology.

• All scientific studies have certain steps;

observation, hypothesis, experiment and

sharing results.

5

What is Science?

What is Chemistry?

6

• Chemistry is a science that deals with

the study of matter and its changes.

• Chemistry is a branch of natural

sciences.

• It is interrelated with all other sciences.

Simply chemistry is in everything and in

everywhere.

• It has a lot of branches; biochemistry,

organic chemistry, analytical chemistry,

physical chemistry, electrochemistry,

nuclear chemistry, thermochemistry…etc.

Multiple Choice

Study of substances containing CARBON

• inorganic chemistry

• biochemistry

• organic chemistry

• analytical chemistry

• physical chemistry

Multiple Choice

Study of the processes of living things

• inorganic chemistry

• biochemistry

• organic chemistry

• analytical chemistry

• physical chemistry

Chemistry is an Experimental Science?

Steps of an experiment in chemistry as follow;

• Setting up the experimental equipment and procedures,

• Conducting the experiment,

• Recording data,

• Analyzing results, reaching a conclusion and sharing results.

Laboratory Equipments

7

What is Chemistry?

Beaker Test tube Volumetric Flask Graduated cylinder Burner

Funnel Separatory funnel Test tube rack Erlenmeyer flask Round bottom flask

Multiple Choice

What is an experiment?

• A basic statement established by experiment or observation

• An educated guess that predicts the outcome of your experiment

• a controlled method of testing a hypothesis.

• Rules for how nature will behave under certain conditions, frequently written as an equation.

• A statement that is not scientifically provable

Safety Rules in the Laboratory

• Students must always obey the following safety rules in a school

lab:

1

. Always listen carefully to all instructions given by your chemistry

teacher or lab technician before any experiment.

2

. Learn all the safety rules necessary for your experiment.

3

. Always wear a lab jacket (apron) and safety goggles (glasses).

4

. Read all necessary information about the experiments.

5

. Wear gloves when using heat, chemicals and glassware in

experiments.

6

. Do not throw any chemicals.

7

. Do not touch chemicals with your fingers.

8

. Tie long hair.

9

. Do not horse around in a lab.

10

. Quickly report all accidents to your teacher.

11

. Do not eat, drink, smell or taste any chemical.

8

What is Chemistry?

Multiple Choice

What should you do if you break glass in the lab?

• Tell the teacher.

• Sweep up the glass.

• Pick up the glass with your hands.

• Ignore it; the teacher will clean it up when she sees it later.

Multiple Choice

You should never ______ chemicals in the lab. 

• taste
• touch
• smell
• all of the above

Multiple Choice

If you are not sure what to do during a lab activity:

• guess
• change lab partners
• ask a teacher
• just sit quietly and do nothing

Multiple Choice

If you see a science experiment set up in the classroom...

• do not touch anything until instructed.
• immediately begin working on the lab.
• go and check all equipment.
• walk around and check each station.

Hazard Warning Symbols

9

What is Chemistry?

• Many

chemicals

are

hazardous.

• Therefore,

hazard warning

symbols

are

placed

on

containers

of

harmful

chemicals and on laboratory
walls to explain and inform
of possible dangers

Homework

:

1

.

Question

:

1

,

3

Page:38

10

What is Chemistry?

Feedback

of

the

Lesson

• I reviewed the some key terms such as science, technology,

chemistry

• I understood the safety rules in the chemistry laboratory
• I learnt the Hazard Warning Symbols

11

What is Chemistry?

•

Thank you for your attention...

12

What is Chemistry?