AP Chemistry Lesson Unit 2

Chapter 2: Chemistry

By Ayush

Multiple Choice

CHALLENGE QUESTION: All of the following are true about Isaac Newton except

• He has 3 laws of motion

• He lived in England

• He has long hair!

• None of the answers are false; ALL are true

Atom

smallest unit of matter

Open Ended

Write a definition of what chemistry is. You have 2 minutes. GO!

Chemistry

• The study of matter and changes that occur within matter

• Matter is anything that takes up space and has mass

Multiple Choice

Which of the following would be considered matter?

• A tennis ball

• A segment of DNA

• A piece of cake

• Air

• All of the following

Organic Chemistry

• The study of matter with carbon

• EXCEPT FOR: Carbon Dioxide

pH

• stands for potential of hydrogen

• basically tells you how much hydrogen is in something

• pH measured from 1-14

• lower: more acidic, higher: more basic

• 0-6 acidic

• 8-14 basic

• 7 neutral

Multiple Choice

Pure water is:

• pure water does not have a pH

• basic

• acidic

• neutral

Multiple Choice

Carbon Dioxide is organic.

• True

• False

Chemical Reaction

Reactants > Products

Multiple Choice

In photosynthesis, carbon dioxide is used to make sugar. What would be the reactant in this chemical reaction?

• Water

• Carbon Dioxide

• Photosynthesis

• Sugar

Physical Reaction

• Changing the FORM of something but not changing it entirely

Multiple Choice

All of the following are PHYSICAL reactions EXCEPT:

• Water turning into steam

• Ripping up paper

• Freezing water

• Cutting up an onion

• All are physical reactions

Catalyst

something that speeds up a process or reaction

Compound

a mixture of two or more different elements

Multiple Choice

All of the following are catalysts except:

• Enzymes that speed up the breakdown of sugar

• Enzymes that speed up the breakdown of water into oxygen and hydrogen ions

• A molecule that slows down a reaction

• All are catalysts!