Mixtures Compounds

How is a compound different from a mixture?

• Compounds are created through physical changes; mixtures are created through chemical reactions.

• Compounds, on average, are heavier than mixtures.

• Mixtures, on average, are heavier than compounds.

• Mixtures are created through physical changes; compounds are created through chemical reactions.

2. What occurs during a chemical reaction?

• Atoms of two or more elements are destroyed

• Atoms of two or more elements oppose one another

• Atoms of two or more elements bond together

• Atoms of two or more elements trade protons

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3. What is true of a mixture?

• It is produced through chemical reactions

• It can never be separated into its constituent substances

• It retains the properties of the substances that make it up

• It is always thicker than the two chemicals that go into it

Based on the information from the movie, what can you conclude about the most common chemical compound on earth?

• It's oxygen

• It's hydrogen gas

• It's carbon dioxide

• It's water

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5. What is true of a compound?

• It requires electrical energy to make

• It requires heat energy to make

• It must have water as one of its components

• It does not always retain the properties of the substances that make it up

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6. Which of the following two ingredients can combine to make a compound?

• Hydrogen and oxygen

• Sugar and water

• Salt and water

• Eggs and butter

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Which of the following is a heterogeneous mixture?

• 
• 
• 
• 

Which of the following is an example of a chemical element?

• Sugar

• Water

• Salt

• Sodium

Where can you find a common homogeneous mixture?

• a

• b

• c

• d

10. The elements of a heterogeneous mixture can be distinguished visually. What does this mean?

• That you can see the different component parts of the mixture.

• That heterogeneous mixtures combine solids and liquids.

• That two separate elements have been mixed together.

• That the components of the mixture cannot be separated