Reaction Types
What reaction pattern combines substances to form a single, larger product?
Synthesis
What pH number is neutral?
7
Which macromolecule is mostly found in oil and butter?
Fats (or lipids)
What is activation energy?
The energy needed to start a reaction
What is the substance being dissolved called?
Solute
What reaction pattern breaks substances into smaller parts?
Decomposition
Are lemons acidic or basic?
Acidic
Spell Mr. Charlie's last name on the board.
McCormick
Do reactions happen slower or faster in cold temperatures?
Slower
Why don't oil and water mix well?
Like dissolves like (water is polar; oil is nonpolar)
Identify the reaction type: CH₄ + O₂ → CO₂ + H₂O
Combustion
Which is more acidic: pH 2 or pH 9?
pH 2
What happens to proteins in egg whites when heated?
They denature (or change shape)
Which team is winning the NBA championship?
Rip Lakers
What variable do we change in an experiment?
Independent variable
Balance: __ H₂ + __ O₂ → __ H₂O
2H₂ + O₂ → 2H₂O
When is the science fair?
Friday, June 5th!!!
Why does cocoa dissolve better in hot water/milk?
Heat increases solubility (particle energy increases)
What is an exothermic reaction?
A reaction that releases heat into its surroundings (e.g., combustion)
What is the substance doing the dissolving called?
Solvent
This reaction mechanism involves the transfer of electrons.
Redox
Identify the acid in this reaction: NaHCO₃ + CH₃COOH → CO₂ + H₂O + NaCH₃COO
CH₃COOH (vinegar)
Name ONE thing you remember from Biology lol
Literally anything
What is an endothermic reaction?
A reaction that absorbs energy from its surroundings (e.g., photosynthesis)
A student wants to know how the amount of sugar in a recipe affects the texture of a cookie, but also changes the amount of baking soda in the recipe between trials. Why is this a bad experiment?
Too many independent variables!