Chapter 1: Introduction to Chemistrybfhscollings.weebly.com › ... › chapter_1_notes.pdf · What...
Transcript of Chapter 1: Introduction to Chemistrybfhscollings.weebly.com › ... › chapter_1_notes.pdf · What...
Chapter 1: Introduction to Chemistry
Section 1.1 - The scope of Chemistry
•••
••••••
•••
•••
•
•
•
•
••
•••••
•
•
••
••
•••
••
•••
What is Chemistry? ● Chemistry involves studying matter● Matter: anything that has mass and takes up
space (you do not have to be able to see it….)○ Chemistry is the study of what matter is made of, and
how matter changes
● All living and non-living things are made of matter, therefore chemistry chemistry affects most aspects of life and nature
● It is the central science, as it links in well with most other aspects of science
Can you name different aspects of Chemistry?● Organic Chemistry: Study of
anything that contains carbon● Inorganic Chemistry: Study of
anything that does not contain carbon
● Biochemistry: Study of processes that take place in living things
● Analytical Chemistry: Study of what matter is made of
● Physical Chemistry: Study of changes in matter
● There is a lot of overlap between the different aspects of chemistry
Why is Chemistry an important subject to study? ● It overlaps with all other aspects of
science● An understanding of chemistry can
help you understand how things work, provide an appreciation of the natural world, and make you an informed citizen
● Many application to everyday life: cooking, baking, cleaning all utilize fundamental principles of chemistry
What is alchemy? How does it relate to Chemistry? ● Alchemists were the world’s first chemists
○ They wanted to be able to change common metals into gold (which is not possible outside the world of harry potter)
● Although unsuccessful, they were pioneers in the field of chemistry● Developed techniques for separating mixtures, developed
equipment for analysing materials● Shift to chemistry as a science occurred in Europe in the 1500s
○ King Charles II supported science, royal society established ● Antoine-Laurent Lavoisier did work in the 1700s that changed
chemistry from observation based to measurement based○ Developed a balance that measured mass to nearest 0.0005
gram○ Allowed demonstration that materials need oxygen to burn,
and can gain mass
How is science conducted? ● All scientists utilise the same process of
scientific methodology when conducting a scientific investigation
● Observations give rise to a testable hypothesis - fundamental basis for all science!
● Experiment then designed● Results collected and analyzed● Results discussed relative to published
work in the field
•
•
••
••
••
•••
•
••
•
Why do scientists rarely work alone? ● Many minds make like work; some
problems are just so complicated no single person could solve them by themselves
● Different people have different skill sets● All universities might be paid to do
research for a specific company● Often not easy sharing resources, and
people often have differing opinions
•
•
•
• …
•
•••••
••
••
•
•••
•••
How do you solve a numeric problem? ● Analyze
○ You need to work out what you know, and what you don’t know
● Calculate ○ Calculate the answer, ensuring that you
have performed any necessary unit conversions
● Evaluate ○ Check that the answer makes sense
What about non-numeric problems?
● Like numeric problems, you need to start with an analysis of the problem○ Identify what is known, and
what is unknown● You then make a plan as to how to
solve the problem● When solving the problem, a
picture of flowchart may help ○ A model might also be useful