Why is water considered the universal solvent?(1 point)
Responses
Water dissolves more substances than any other solvent.
Water dissolves more substances than any other solvent.
Water molecules are held together by covalent bonds.
Water molecules are held together by covalent bonds.
Water is a polar compound because its ends have opposite charges.
Water is a polar compound because its ends have opposite charges.
Water molecules are weakly bonded to other water molecules.
Water molecules are weakly bonded to other water molecules.
9 answers
The correct response is: Water dissolves more substances than any other solvent.
Which phrase best defines a covalent bond?(1 point)
Responses
strong polar attraction
strong polar attraction
electrons shared between atoms
electrons shared between atoms
electrons transferred between atoms
electrons transferred between atoms
weak polar attraction
Responses
strong polar attraction
strong polar attraction
electrons shared between atoms
electrons shared between atoms
electrons transferred between atoms
electrons transferred between atoms
weak polar attraction
The correct response is: electrons shared between atoms.
Which description accurately represents a water molecule?(1 point)
Responses
strongly negative hydrogen poles, strongly positive oxygen pole
strongly negative hydrogen poles, strongly positive oxygen pole
slightly negative oxygen pole, slightly positive hydrogen poles
slightly negative oxygen pole, slightly positive hydrogen poles
slightly negative hydrogen poles, slightly positive oxygen pole
slightly negative hydrogen poles, slightly positive oxygen pole
strongly negative oxygen pole, strongly positive hydrogen poles
Responses
strongly negative hydrogen poles, strongly positive oxygen pole
strongly negative hydrogen poles, strongly positive oxygen pole
slightly negative oxygen pole, slightly positive hydrogen poles
slightly negative oxygen pole, slightly positive hydrogen poles
slightly negative hydrogen poles, slightly positive oxygen pole
slightly negative hydrogen poles, slightly positive oxygen pole
strongly negative oxygen pole, strongly positive hydrogen poles
The correct response is: slightly negative oxygen pole, slightly positive hydrogen poles.
Why is water able to easily dissolve ionic compounds?(1 point)
Responses
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
The poles of water molecules share electrons with the ions in ionic compounds.
The poles of water molecules share electrons with the ions in ionic compounds.
The bonds between water molecules are easily broken by the strong ions of ionic compounds.
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.
Responses
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
The poles of water molecules share electrons with the ions in ionic compounds.
The poles of water molecules share electrons with the ions in ionic compounds.
The bonds between water molecules are easily broken by the strong ions of ionic compounds.
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 correct response is: The electron transfer in ionic compounds results in ions that are attracted to water’s poles.
In the compound MgCl2, magnesium donates two electrons, one to each chlorine atom. Which type of compound is this, and is it likely to dissolve in a polar solvent?(1 point)
Responses
covalent, yes
covalent, yes
ionic, yes
ionic, yes
nonpolar, no
nonpolar, no
polar, no
Responses
covalent, yes
covalent, yes
ionic, yes
ionic, yes
nonpolar, no
nonpolar, no
polar, no
The correct response is: ionic, yes.
1 answer