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Questions and Answers
What is the main factor used to distinguish between ionic and covalent compounds?
What is the main factor used to distinguish between ionic and covalent compounds?
- Their reactivity with oxygen
- Their color when in solid state
- Their molecular weight
- Their ability to conduct electricity when dissolved in water (correct)
What is the composition of the salt molecule (sodium chloride)?
What is the composition of the salt molecule (sodium chloride)?
- Sodium and chlorine (correct)
- Sodium and oxygen
- Chlorine and hydrogen
- Sodium and carbon
What distinguishes a pure substance from a mixture?
What distinguishes a pure substance from a mixture?
- Pure substances are always in liquid form, while mixtures can be in any state of matter
- Pure substances have only one compound or element, while mixtures have two or more compounds and/or elements that do not form chemical bonds with each other (correct)
- Pure substances have a higher boiling point than mixtures
- Pure substances are always colorful, while mixtures are colorless
How can you separate sodium chloride (NaCl) and water after they are mixed?
How can you separate sodium chloride (NaCl) and water after they are mixed?
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What is the main difference between ionic and covalent bonds?
What is the main difference between ionic and covalent bonds?
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Which type of elements prefer to be alone?
Which type of elements prefer to be alone?
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What is a molecule?
What is a molecule?
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Which compound is an example of a mixture?
Which compound is an example of a mixture?
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What type of chemical bond forms table salt (NaCl)?
What type of chemical bond forms table salt (NaCl)?
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Which type of elements build different molecules?
Which type of elements build different molecules?
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