Podcast
Questions and Answers
Which of the following is an example of a chemical property?
Which of the following is an example of a chemical property?
- Color
- Density
- Flammability (correct)
- Boiling point
Saltwater is an example of which type of mixture?
Saltwater is an example of which type of mixture?
- Heterogeneous mixture
- Element
- Compound
- Homogeneous mixture (correct)
Which separation technique is most suitable for separating ethanol from a mixture of ethanol and water, given their different boiling points?
Which separation technique is most suitable for separating ethanol from a mixture of ethanol and water, given their different boiling points?
- Filtration
- Evaporation
- Distillation (correct)
- Chromatography
A compound is found to contain 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. Which law does this observation support?
A compound is found to contain 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. Which law does this observation support?
Which of the following is a diatomic molecule?
Which of the following is a diatomic molecule?
What type of formula shows the arrangement of atoms and bonds in a molecule?
What type of formula shows the arrangement of atoms and bonds in a molecule?
Which of the following is an example of a physical change?
Which of the following is an example of a physical change?
Which state of matter has a definite volume but takes the shape of its container?
Which state of matter has a definite volume but takes the shape of its container?
Which of the following describes the role of an oxidizing agent in a redox reaction?
Which of the following describes the role of an oxidizing agent in a redox reaction?
Consider the reaction: $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$. If 4.0 grams of $H_2$ react with excess $O_2$, what mass of $H_2O$ is produced (The molar mass of $H_2$ is 2.0 g/mol and $H_2O$ is 18.0 g/mol)?
Consider the reaction: $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$. If 4.0 grams of $H_2$ react with excess $O_2$, what mass of $H_2O$ is produced (The molar mass of $H_2$ is 2.0 g/mol and $H_2O$ is 18.0 g/mol)?
A solution is prepared by dissolving 10.0 grams of NaCl in enough water to make 500.0 mL of solution. What is the molarity of the NaCl solution (Molar mass of NaCl = 58.44 g/mol)?
A solution is prepared by dissolving 10.0 grams of NaCl in enough water to make 500.0 mL of solution. What is the molarity of the NaCl solution (Molar mass of NaCl = 58.44 g/mol)?
How does a catalyst increase the rate of a chemical reaction?
How does a catalyst increase the rate of a chemical reaction?
According to Le Chatelier's principle, what happens to the equilibrium of an exothermic reaction if the temperature is increased?
According to Le Chatelier's principle, what happens to the equilibrium of an exothermic reaction if the temperature is increased?
Which of the of following statements accurately describes the relationship between molar mass and Avogadro's number?
Which of the of following statements accurately describes the relationship between molar mass and Avogadro's number?
In the following reaction, identify the limiting reactant when 5 moles of $H_2$ and 3 moles of $O_2$ are allowed to react: $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$
In the following reaction, identify the limiting reactant when 5 moles of $H_2$ and 3 moles of $O_2$ are allowed to react: $2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$
If 50.0 mL of a 2.0 M stock solution of NaCl is diluted to a total volume of 250.0 mL, what is the molarity of the diluted solution?
If 50.0 mL of a 2.0 M stock solution of NaCl is diluted to a total volume of 250.0 mL, what is the molarity of the diluted solution?
For the reaction $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$, which change will shift the equilibrium towards the formation of $NH_3$?
For the reaction $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$, which change will shift the equilibrium towards the formation of $NH_3$?
Which of the following statements is true regarding an endothermic reaction?
Which of the following statements is true regarding an endothermic reaction?
Flashcards
Chemistry
Chemistry
The study of matter and its properties, and how matter changes.
Matter
Matter
Anything that has mass and takes up space (volume).
Chemical
Chemical
A substance with a definite and consistent composition.
Physical Properties
Physical Properties
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Chemical Properties
Chemical Properties
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Physical Change
Physical Change
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Chemical Change
Chemical Change
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Atom
Atom
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Ion
Ion
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Cation
Cation
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Anion
Anion
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Balancing Chemical Equations
Balancing Chemical Equations
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Avogadro's Number (NA)
Avogadro's Number (NA)
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Limiting Reactant
Limiting Reactant
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Molarity (M)
Molarity (M)
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Acids
Acids
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Exothermic Reaction
Exothermic Reaction
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Chemical Equilibrium
Chemical Equilibrium
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Study Notes
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Description
Overview of chemistry: the study of matter, its properties, and changes. States of matter, including solid, liquid, and gas. Physical and chemical properties, intensive vs. extensive properties, and physical vs. chemical changes are explained.
