Definitions
What is the pH range for Acids?
< 7
Which acid is this? (HCl)
Hydrochloric acid
Acid + Base --> ?
Salt + water
What is a Catalyst?
A substance that speeds up a reaction
What is the variable you deliberately change in an experiment?
Independent variable
What ion do all acids release into water?
Hydrogen
Which acid is this? H2SO4
Acid + metal --> ?
Salt + hydrogen gas
List one factor that increases reaction rate
Temperature, surface area, concentration, etc.
Why are controlled variables important in an experiment?
So you can know what caused a result
Name one use for a base in everyday life
Toothpaste, Drain cleaner, Soap
What base is this? KOH
potassium hydroxide
Acid + carbonate --> ?
Carbon dioxide + water
Why does powder react faster than chunks?
greater surface area
An invalid result
What does the pH scale measure?
Concentration of Hydrogen Ions
What acid is this? HNO3
Nitric Acid
Write a balanced chemical equation for HCl + NaOH?
HCl + NaOH --> NaCl + H2O
Why does higher concentration lead to faster reaction?
more collisions
What is meant by reliable and valid data?
Reliable = consistent, Valid = tests what is meant to be tested.
What is the the Bronsted Lowry definition of an Acid?
Which acid is this? CH3COOH
Acetic Acid
Write balanced chemical reaction for Mg + HCl?
Mg + 2HCl --> MgCl2 + H2
How does a catalyst lower activation energy?
provides alternative pathway
What happens as you approach the speed of light?
Time slows down.