Podcast
Questions and Answers
Which branch of chemistry is most directly involved in studying the metabolic pathways within a human cell?
Which branch of chemistry is most directly involved in studying the metabolic pathways within a human cell?
- Analytical chemistry
- Biochemistry (correct)
- Organic chemistry
- Inorganic chemistry
Consider a sealed container holding a gas. If the temperature of the gas is increased, causing it to ionize, into what state of matter will the gas transition?
Consider a sealed container holding a gas. If the temperature of the gas is increased, causing it to ionize, into what state of matter will the gas transition?
- Solid
- Plasma (correct)
- A mixture of gas and liquid
- Liquid
A chemist is tasked with identifying an unknown liquid. Which of the following properties would be classified as a chemical property?
A chemist is tasked with identifying an unknown liquid. Which of the following properties would be classified as a chemical property?
- Density
- Reactivity with acid (correct)
- Color
- Boiling point
Which process is an example of a physical change?
Which process is an example of a physical change?
A solution of salt water is best classified as which type of mixture?
A solution of salt water is best classified as which type of mixture?
To separate a mixture of sand and salt, which sequence of separation techniques would be most effective?
To separate a mixture of sand and salt, which sequence of separation techniques would be most effective?
Which substance is an element?
Which substance is an element?
Which of the following is a characteristic of a compound, but not of a mixture?
Which of the following is a characteristic of a compound, but not of a mixture?
Element X has an atomic number of 16. Which statement is correct regarding element X?
Element X has an atomic number of 16. Which statement is correct regarding element X?
Two isotopes of the same element will always have the same number of which subatomic particle?
Two isotopes of the same element will always have the same number of which subatomic particle?
Which of the following chemical formulas is most likely to be an empirical formula?
Which of the following chemical formulas is most likely to be an empirical formula?
In the reaction $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$, if 4 grams of $H_2$ react completely, how many grams of $O_2$ are required? (Molar mass: $H_2$ = 2 g/mol, $O_2$ = 32 g/mol)
In the reaction $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$, if 4 grams of $H_2$ react completely, how many grams of $O_2$ are required? (Molar mass: $H_2$ = 2 g/mol, $O_2$ = 32 g/mol)
Which of the following statements correctly describes what happens during oxidation?
Which of the following statements correctly describes what happens during oxidation?
What is the role of a catalyst in a chemical reaction?
What is the role of a catalyst in a chemical reaction?
For the reversible reaction $A + B \rightleftharpoons C$, what will happen if more of reactant A is added to the system at equilibrium?
For the reversible reaction $A + B \rightleftharpoons C$, what will happen if more of reactant A is added to the system at equilibrium?
Which of the following is true for an endothermic reaction?
Which of the following is true for an endothermic reaction?
A solution has a pH of 3. Which of the following statements is true about the solution?
A solution has a pH of 3. Which of the following statements is true about the solution?
Consider the reaction $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$. Under which conditions would the production of $NH_3$ (ammonia) be favored?
Consider the reaction $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$. Under which conditions would the production of $NH_3$ (ammonia) be favored?
Flashcards
Chemistry
Chemistry
The study of matter, its properties, and how it changes.
Matter
Matter
Anything that has mass and takes up space (volume).
Solid (state of matter)
Solid (state of matter)
Has a definite shape and volume; particles are tightly packed.
Liquid (state of matter)
Liquid (state of matter)
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Gas (state of matter)
Gas (state of matter)
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Physical Property
Physical Property
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Chemical Property
Chemical Property
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Element
Element
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Atom
Atom
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Atomic Number (Z)
Atomic Number (Z)
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Isotopes
Isotopes
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Ion
Ion
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Molecule
Molecule
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Covalent Bond
Covalent Bond
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Chemical Formula
Chemical Formula
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Chemical Reaction
Chemical Reaction
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Balancing Chemical Equations
Balancing Chemical Equations
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Stoichiometry
Stoichiometry
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Study Notes
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Description
Chemistry is the study of matter, its properties, and changes. It's the 'central science,' linking physics, biology, and environmental science. Key branches include organic, inorganic, biochemistry, analytical, and physical chemistry.
