Have an account?
Skip to Content
Build your own quiz
9 questions
Show Answers
See Preview
- 1. Multiple Choice
Five cubes of iron are tested in a laboratory. The tests and the results are shown in the table. Which tests demonstrate chemical properties?1, 3, and 41, 3, and 52 and 42 and 5 - 2. Multiple ChoiceHow many of the properties listed for the element sodium are considered physical properties?1234
- 3. Multiple Choice2H2(g) + O2(g) → 2H2O(ℓ)
How would you classify the change above? Explain.Physical Change:
Bonds are broken and new bonds are formed.
Identity CHANGESChemical Change:
NO bonds are broken and NO new bonds are formed.
Identity Stays the SAMEPhysical Change:
NO bonds are broken and NO new bonds are formed.
Identity Stays the SAMEChemical Change:
Bonds are broken and new bonds are formed.
Identity CHANGES - 4. Multiple ChoiceA student prepares two separate samples by combining a salt (NH4Cl), sand (SiO2), and water (H2O). Both samples are at the same temperature, thoroughly stirred, and then allowed to stand. The mass of each component used to make the samples is listed in the data table shown. How would you best classify the prepared samples?ElementCompoundHeterogeneous MixtureHomogeneous Mixture
- 5. Multiple ChoiceA student prepares two separate samples by combining a salt (NH4Cl), sand (SiO2), and water (H2O) at 15°C. Both samples are thoroughly stirred and allowed to stand. The mass of each component used to make the samples is listed in the data table shown. How would the student separate out the sand by physical means from the rest of the sample?Add additional water to dissolve the sand.Evaporate the water.Pour the sample through a filter paper.The components can not be separated by physical means.
- 6. Multiple ChoiceThe sample pictured changes from the solid state to the gas state when heated. Does this change represent a chemical or physical change?Physical Change:
The identity of the substance changes.Physical Change:
The identity of the substance stays the same.Chemical Change:
The identity of the substance changes.Chemical Change:
The identity of the substance stays the same. - 7. Multiple ChoiceWhich of the following changes represents a physical change?BOTH
Change 1
AND
Change 2NEITHER
Change 1
NOR
Change 2ONLY
Change 1ONLY
Change 2 - 8. Multiple ChoiceAt 1 atm of pressure, equal masses of H2O(s), H2O(ℓ), and H2O(g) havethe same densitythe same distance between moleculesdifferent volumesdifferent percent compositions of elements
- 9. Multiple ChoiceExamine the samples in the image shown. The identity of the material in each box is the same. Which sample would be most easily compressed?SolidLiquidGasAll samples are equally compressible because their identities are the same.
- Answer choicesTagsAnswer choicesTags