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Questions and Answers
Why is it important to know the properties of common liquid materials?
Which of the following are TRUE about the use of ethyl alcohol?
What is the common use of methane?
What kind of compound should Maria Paula use to preserve a fish for her Biology class project?
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Suppose you were asked to prepare a 250-g chocolate mousse, containing 30% cream. How much cream would you use?
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Which among the following represents a covalent compound?
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What is the Avogadro's number, which represents the number of particles in 1 mole?
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How can knowledge about the mole concept be useful for environmentalists?
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How can one apply knowledge on percentage composition?
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Which of the following is important in determining how atoms combine?
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How does ionic bonding take place?
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What type of chemical bond is formed between two oxygen atoms?
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In a sports drink, which compound is NOT considered as electrolytes?
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Which statement BEST explains the high solubility of sodium chloride (NaCl) in water?
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Study Notes
Importance of Liquid Materials
- Knowing the properties of common liquid materials is crucial in various applications.
Ethyl Alcohol Uses
- Ethyl alcohol is used as a solvent, antiseptic, and fuel.
Methane Uses
- Methane is commonly used as a fuel and in the production of electricity.
Preservatives for Fish
- To preserve a fish for a Biology class project, Maria Paula should use a compound like formalin or paraformaldehyde.
Chocolate Mousse Recipe
- To prepare a 250-g chocolate mousse containing 30% cream, 75g of cream would be needed (250g x 0.30 = 75g).
Covalent Compounds
- Water (Hâ‚‚O) is an example of a covalent compound.
Avogadro's Number
- Avogadro's number represents the number of particles in 1 mole, which is 6.022 x 10²³ particles.
Mole Concept in Environmentalism
- Knowledge of the mole concept is useful for environmentalists in calculating the amount of substances in the environment and predicting the effects of pollution.
Percentage Composition Applications
- Knowledge of percentage composition is useful in calculating the amount of ingredients in a product, determining the purity of a substance, and comparing the composition of different substances.
Atomic Combination
- The valence electrons of an atom are important in determining how atoms combine.
Ionic Bonding
- Ionic bonding takes place through the transfer of electrons between atoms, resulting in the formation of ions with opposite charges that attract each other.
Oxygen Bonding
- A covalent bond is formed between two oxygen atoms (Oâ‚‚).
Electrolytes in Sports Drinks
- Sucrose is not considered an electrolyte in sports drinks.
Solubility of Sodium Chloride
- The high solubility of sodium chloride (NaCl) in water is due to the strong attraction between the sodium and chloride ions and the polar water molecules.
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Description
Test your knowledge about the properties of common liquid materials and the uses of ethyl alcohol. Explore questions related to the importance of knowing the properties of liquids, as well as the various applications of ethyl alcohol in different fields.
