1.1 Introduction to Chemistry

Question 1

Antoine Lavoisier

Answer 1

Father of Modern Chemistry (1743-1794)

• wrote first extensive list of elements (with hydrogen and oxygen)
• helped reform chemical nomenclature
• created first version of the Law of Conservation of Mass

Question 2

Robert Boyle

Answer 2

1627-1691
First European scientist to apply the scientific method
-used quantitative experiments to measure the relationship between the pressure and volume of a gas

Question 3

Plastics

Answer 3

Initially made through the chemical modification of cellulose
-composed of thousands of molecular chains
New plastics with new properties created when chemicals were altered, keeping the chains intact

Question 4

Origin of the Word “Alchemy”

Answer 4

Arab word “al-kimia” (the art of transformation)
-possibly adopted from Greeks, from Egyptians
“al-kimiya” (the art of the land of Khem)

Question 5

Semiconductors

Answer 5

Scientists can fine-tune the chemical composition

• make it absorb light as solar cell
• emit light as light source

Question 6

Chemistry

Answer 6

The scientific study of matter and the changes it undergoes

Question 7

Photovoltaic

Answer 7

semiconductor device that converts light into electric energy

• light absorbed, crystal atoms ionized to create free, negatively charged electrons and positively charged ions
• silicon usually used

http://www.chemistryexplained.com/Ru-Sp/Solar-Cells.html