1.4 Matter And The Scientific Method

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| By Harry Brielmann
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Harry Brielmann
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  • 1/7 Questions

    A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

    • Hypothesis
    • A law
    • A theory
    • None of the above
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About This Quiz

Many science classes begin with the scientific method. Here we consider a systematic approach to discovery, including observation, hypothesis, experiment, conclusions, controls, and theories and laws.

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  • 2. 

    All of the following are properties of tin.  Which one is a chemical property of tin?

    • Tin can be hammered into a thin sheet.

    • At –40C a sheet of tin crumbles to a gray powder.

    • At –40C a sheet of tin crumbles to a gray powder.

    • When a bar of tin is bent, it emits an audible “cry”.

    • Tin erodes when added to hydrochloric acid, and a clear gas forms.

    Correct Answer
    A. Tin erodes when added to hydrochloric acid, and a clear gas forms.
    Explanation
    malleabililty is physical
    melting is physical
    the tin is still tin when it "cries"
    But when it reacts with HCl it forms new substances- that's physical

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  • 3. 

    A unifying principle that explains a body of facts and relations is referred to as

    • A hypothesis

    • A law

    • A theory

    • None of the above

    Correct Answer
    A. A theory
    Explanation
    scientists work their way up from clueless to a hypothesis , to a theory. then to a law, then they die. Just kidding.

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  • 4. 

    Which one of the following is an example of a physical property?

    • Dynamite explodes

    • Meat rots if it is not refrigerated

    • Gasoline burns

    • Ice floats on top of liquid water

    • A silver platter tarnishes

    Correct Answer
    A. Ice floats on top of liquid water
    Explanation
    all are forming new substances except the ice floating- no chemical change there.

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  • 5. 

    Choose the response that includes all the items listed below that are pure substances.            1. orange juice    2. steam    3. ocean water    4. oxygen    5. vegetable soup

    • 1 only

    • 2 4

    • 1 3 4

    • 4 only

    Correct Answer
    A. 2 4
    Explanation
    there are numerous pure substance in orange juice, ocean water, and soup. However, steam is pure water, and oxygen is an element; both are pure.

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  • 6. 

    Which of the following is an example of a physical property?

    • Corrosiveness of sulfuric acid

    • Toxicity of cyanide

    • Flammability of gasoline

    • Neutralization of stomach acid with an antacid

    • Lead becomes a liquid when heated to 601C

    Correct Answer
    A. Lead becomes a liquid when heated to 601C
    Explanation
    when sulfuric acid corrodes something it turns it into something else- that's chemical
    when cyanide is ingested it causes a chemical change in the patient
    gasoline combines with oxygen to form carbon dioxide and water- a chemical change
    stomach acid (hydrochloric acid) combines with a base to form salt and water- new substances are formed; this is a chemical change
    when lead melts it simply becomes liquid lead; it is still lead; this is a physical change

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  • 7. 

                A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as

    • A hypothesis

    • A law

    • A theory

    • None of the above

    Correct Answer
    A. A law
    Explanation
    a law should never be corrected; a law is the highest standard that science can hope to determine

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 01, 2013
    Quiz Created by
    Harry Brielmann
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