Podcast
Questions and Answers
What is absolute zero?
What is absolute zero?
What defines an acid according to the provided vocabulary?
What defines an acid according to the provided vocabulary?
What is the purpose of the acid dissociation constant (Kₐ)?
What is the purpose of the acid dissociation constant (Kₐ)?
What does activation energy refer to?
What does activation energy refer to?
Signup and view all the answers
Which of the following best describes an alkene?
Which of the following best describes an alkene?
Signup and view all the answers
What are alkali metals?
What are alkali metals?
Signup and view all the answers
What is an activated complex in chemical reactions?
What is an activated complex in chemical reactions?
Signup and view all the answers
What is an alloy?
What is an alloy?
Signup and view all the answers
What is the role of an acid anhydride?
What is the role of an acid anhydride?
Signup and view all the answers
What are allotropes?
What are allotropes?
Signup and view all the answers
Study Notes
Absolute Temperature
- A temperature reading relative to absolute zero
- Uses the unit of Kelvins
Absolute Zero
- The lowest possible temperature
- Atoms stop moving completely at this point (though bonds still vibrate slightly)
Accuracy
- How close a measured value is to the true value
- Example: If someone is six feet tall, measuring them as six feet one inch is fairly accurate. Measuring them as twelve feet is inaccurate.
Acid
- Substances releasing H+ ions in water
- Has a pH less than 7
- Dissolves metals like in water
- Turns litmus paper red and phenolphthalein colorless
Acid Anhydride
- An oxide that produces an acid when added to water
- Example: SO3 forms sulfuric acid (H2SO4) when combined with water
Acid Dissociation Constant (Ka)
- Ratio of conjugate base and acid concentrations when weak acid dissociates in water
- Example: if conjugate base is 0.5 M and acid is 10 M, Ka = 0.05
Activated Complex
- Intermediate state in a chemical reaction
- Reactants join together before becoming products
Activation Energy
- Minimum energy needed for a chemical reaction to occur
- Can be very small (like sparking gasoline) or very high (like burning magnesium)
Activity Series
- Arranging elements in order of their reactivity with water and acids
Actual Yield
- Amount of product actually produced in a chemical reaction
- Represents the amount you can weigh.
Addition Reaction
- Atoms add to a carbon-carbon multiple bond
Adsorption
- One substance collecting on the surface of another
Alcohol
- Organic molecule containing an -OH group
Aldehyde
- Organic molecule containing a -COH group
Alkali Metals
- Group I elements in the periodic table
Alkaline Earth Metals
- Group II elements in the periodic table
Alkane
- Organic molecule with only single carbon-carbon bonds
Alkene
- Organic molecule containing at least one C=C double bond
Alkyne
- Organic molecule containing at least one C≡C triple bond
Allotropes
- Different forms of an element in the same state
- Example: White and red phosphorus
Alloy
- Mixture of two or more metals
- Often stronger and harder than pure metals
Alpha Particle
- Radioactive particle equivalent to a helium nucleus (2 protons, 2 neutrons)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on fundamental chemistry concepts including temperature, acidity, and chemical reactions. This quiz covers topics such as absolute temperature, acid dissociation constants, and the concept of activated complexes. Perfect for high school students or anyone looking to refresh their chemistry knowledge.
