Question
Question 1
Question 2
Question 3
A) Why is water considered the universal solvent? (1 point)
Water is a polar compound because its ends have opposite charges.
Water molecules are held together by covalent bonds.
Water dissolves more substances than any other solvent.
Water molecules are weakly bonded to other water molecules.
A) Which phrase best defines a covalent bond? (1 point)
strong polar attraction
electrons transferred between atoms
electrons shared between atoms
weak polar attraction
A) Which description accurately represents a water molecule? (1 point)
slightly negative hydrogen poles, slightly positive oxygen pole
strongly negative oxygen pole, strongly positive hydrogen poles
strongly negative hydrogen poles, strongly positive oxygen pole
slightly negative oxygen pole, slightly positive hydrogen poles
Question 4
Question 5
A) Why is water able to easily dissolve ionic compounds? (1 point)
The bonds between water molecules are easily broken by the strong ions of ionic compounds.
The opposite charges of ionic compounds repel each other, so water molecules can separate the ions.
The poles of water molecules share electrons with the ions in ionic compounds.
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
A) Potassium chromate is sometimes used with other compounds to check for the
presence of silver. Which of these formulas is correct for a silver-containing precipitate in such a
reaction? (1 point)
(K2CrO4)
AgNO3
AgCl
Ag2CrO4
AgCrO4
Question 2
Question 3
A) Why is water considered the universal solvent? (1 point)
Water is a polar compound because its ends have opposite charges.
Water molecules are held together by covalent bonds.
Water dissolves more substances than any other solvent.
Water molecules are weakly bonded to other water molecules.
A) Which phrase best defines a covalent bond? (1 point)
strong polar attraction
electrons transferred between atoms
electrons shared between atoms
weak polar attraction
A) Which description accurately represents a water molecule? (1 point)
slightly negative hydrogen poles, slightly positive oxygen pole
strongly negative oxygen pole, strongly positive hydrogen poles
strongly negative hydrogen poles, strongly positive oxygen pole
slightly negative oxygen pole, slightly positive hydrogen poles
Question 4
Question 5
A) Why is water able to easily dissolve ionic compounds? (1 point)
The bonds between water molecules are easily broken by the strong ions of ionic compounds.
The opposite charges of ionic compounds repel each other, so water molecules can separate the ions.
The poles of water molecules share electrons with the ions in ionic compounds.
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
A) Potassium chromate is sometimes used with other compounds to check for the
presence of silver. Which of these formulas is correct for a silver-containing precipitate in such a
reaction? (1 point)
(K2CrO4)
AgNO3
AgCl
Ag2CrO4
AgCrO4
Answers
GPT-5 mini
1) Why is water considered the universal solvent?
- Answer: Water dissolves more substances than any other solvent.
(Because its polarity and hydrogen-bonding let it solvate many different ions and molecules.)
2) Which phrase best defines a covalent bond?
- Answer: electrons shared between atoms.
3) Which description accurately represents a water molecule?
- Answer: slightly negative oxygen pole, slightly positive hydrogen poles.
4) Why is water able to easily dissolve ionic compounds?
- Answer: The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
(Water’s dipoles surround and stabilize the separated ions.)
5) Which formula is correct for a silver-containing precipitate with chromate?
- Answer: Ag2CrO4.
- Answer: Water dissolves more substances than any other solvent.
(Because its polarity and hydrogen-bonding let it solvate many different ions and molecules.)
2) Which phrase best defines a covalent bond?
- Answer: electrons shared between atoms.
3) Which description accurately represents a water molecule?
- Answer: slightly negative oxygen pole, slightly positive hydrogen poles.
4) Why is water able to easily dissolve ionic compounds?
- Answer: The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
(Water’s dipoles surround and stabilize the separated ions.)
5) Which formula is correct for a silver-containing precipitate with chromate?
- Answer: Ag2CrO4.