boyer test 14 – Flashcards
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How is a compound different from a mixture?
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Mixtures are created through physical changes; compounds are created through chemical reactions
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What happens during a chemical reaction?
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Atoms of two or more elements bond together
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What is true of a mixture?
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It retains the properties of the substances that make it up
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Based on the information from the movie, what can you conclude about the most common chemical compound on earth?
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it's water
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What is true of a compound?
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It does not always retain the properties of the substances that make it up
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Which of the following two ingredients can combine to make a compound?
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Hydrogen and oxygen
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Which of the following is a heterogeneous mixture?
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cereal
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Which of the following is an example of a chemical element?
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sodium
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Where can you find a common homogenous mixture?
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ocean
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The elements of a heterogeneous mixture can be distinguished visually. What does this mean?
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That you can see the different component parts of the mixture
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A pure substance has a composition that is the
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The same throughout and does not vary from sample to sample
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A pure substance can be an ________ or ______?
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Element or compound
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Compounds are two or more atoms
chemically combined
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whose properties are different from those of the original elements.
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a blend of two or more kinds of matter, each of which retains its own identity and properties.
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mixture
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What is a solute?
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Is the substance being dissolved
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What is a solvent
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Is the one doing the dissolving
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Solute
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homogenous mixture
