Scientist of the Day
Who was our Scientist of the Day?
Rosalind Franklin
What chemical breaks down in this experiment?
Hydrogen peroxide
What speeds up a reaction?
Catalyst
What contains catalase in the experiment?
Yeast
What gas has the formula O₂?
Oxygen
What country was she from?
England
What does hydrogen peroxide break down into? (Hint: There are 2 answers.)
Oxygen & Water
Does a catalyst get used up?
No.
What does the dish soap do?
Traps oxygen gas
Forms bubbles
Turns gas into foam
What is an enzyme?
A biological catalyst.
What structure did she help discover?
DNA
What are the two products formed?
Water & Oxygen gas
What do catalysts do?
Speeds up a reaction
What traps the oxygen?
Dish soap
What demonstrates gas production in the experiment?
Bubbles
What tool did she use to study molecules?
X-ray diffraction
What type of reaction releases heat?
Exothermic
Activation energy
What kind of energy is released?
Heat
Light speeds decomposition
What field did she work in?
Chemistry
What does H₂O₂ stand for?
Hydrogen peroxide
Give one real life example of a catalyst.
Answers may vary.
Potential answers:
Name one sign of a chemical reaction.
Gas, heat, new substance, bubbling
What protects cells by breaking down peroxide?
Catalase