Science Fundamentals Quiz
40 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following best describes the scientific method?

  • Assumptions based on personal beliefs.
  • A series of steps that starts with a conclusion.
  • A set of unchangeable laws.
  • An observation followed by a controlled experiment. (correct)

    • A theory can be absolutely proven correct in science.

    False (B)

    What is the difference between mass and weight?

    Mass is the quantity of matter in a material, while weight is the force with which an object is attracted by gravity.

    In chemistry, the study of the composition, structure, and changes in materials is known as __________.

    <p>chemistry</p> Signup and view all the answers

    Match the following scientific terms with their definitions:

    <p>Hypothesis = A temporary explanation of observed phenomena Theory = A tested explanation of a natural phenomenon Law = A statement about a fundamental relationship in nature Observation = The results and notes obtained from experiments</p> Signup and view all the answers

    Which of the following statements is true about laws in science?

    <p>Laws can be expressed as mathematical equations. (B)</p> Signup and view all the answers

    A hypothesis is a definitive conclusion based on experimental results.

    <p>False (B)</p> Signup and view all the answers

    What is meant by the term 'matter'?

    <p>Matter is anything that occupies space and can be perceived by our senses.</p> Signup and view all the answers

    How many significant figures are there in the measurement 0.0320 m³?

    <p>3 (D)</p> Signup and view all the answers

    Trailing zeros in a whole number without a decimal point are always significant.

    <p>False (B)</p> Signup and view all the answers

    How many significant figures does the number 413.97 have?

    <p>5</p> Signup and view all the answers

    The measurement 156.00 g has _____ significant figures.

    <p>5</p> Signup and view all the answers

    Match the following numbers with their number of significant figures:

    <p>0.0006 = 1 5.120063 = 6 161,000 = 3 3600 = 2</p> Signup and view all the answers

    Which of the following measurements has the most significant figures?

    <p>56.0707 ml (B)</p> Signup and view all the answers

    The number 2500 can be expressed with 2 significant figures as 2.5 x 10².

    <p>True (A)</p> Signup and view all the answers

    Write the number 2500 with 3 significant figures.

    <p>2.50 x 10³</p> Signup and view all the answers

    What happens to coffee when sugar is added and dissolves?

    <p>The coffee, which used to be a pure compound, is no longer a pure compound. (A), The coffee is still a homogeneous mixture. (B)</p> Signup and view all the answers

    Precision refers to how close a measurement is to the true value of a measured quantity.

    <p>False (B)</p> Signup and view all the answers

    What are the two key aspects of a measurement?

    <p>Accuracy and precision</p> Signup and view all the answers

    In the measurement 9.12, the first two digits (9.1) are certain, while the last digit (___) is estimated.

    <p>2</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Accuracy = Closeness to the true value Precision = Closeness among a set of measurements Significant Figures = Digits that include all certain digits and one estimated digit Measurement = Comparison relative to a reference unit</p> Signup and view all the answers

    How can measurement errors be minimized?

    <p>By taking a series of measurements and calculating the average (D)</p> Signup and view all the answers

    All measurements are exact and have no uncertainties.

    <p>False (B)</p> Signup and view all the answers

    What is the true mass of Student C's most precise and accurate measurement?

    <p>2.000 g</p> Signup and view all the answers

    How many significant figures are in 19.0000?

    <p>5 (D)</p> Signup and view all the answers

    How many significant figures are in 0.0005650850?

    <p>7 (B)</p> Signup and view all the answers

    Rounding can influence the number of significant figures in a result.

    <p>True (A)</p> Signup and view all the answers

    What is the result of 1.2151 rounded to three significant figures?

    <p>1.22</p> Signup and view all the answers

    For the sum of 89.332 and 1.1, the final answer rounded to the correct number of significant figures is ______.

    <p>90.4</p> Signup and view all the answers

    When multiplying or dividing numbers, the result should have the same amount of significant figures as which of the following?

    <p>The smallest number (C)</p> Signup and view all the answers

    Match the operation with its significant figures rule:

    <p>Addition or Subtraction = Round to least decimal places Multiplication or Division = Match least significant figures Rounding = Adjust based on digit to be dropped Exact Numbers = Infinite significant figures</p> Signup and view all the answers

    What is the average of the lengths 6.64, 6.68, and 6.70?

    <p>6.67</p> Signup and view all the answers

    What is the result of 11,254.1 g + 0.1983 g expressed to the correct number of significant figures?

    <p>11,254.30 g (D)</p> Signup and view all the answers

    The result of 66.59 L − 3.113 L rounded to the correct number of significant figures is 63.48 L.

    <p>False (B)</p> Signup and view all the answers

    What is the correct rounding of 0.00087564 to three significant figures?

    <p>8.76 × 10^-4</p> Signup and view all the answers

    The result of 15.985 g ÷ 24.12 mL to the correct number of significant figures is __________.

    <p>0.66 g/mL</p> Signup and view all the answers

    Match the following calculations to their results after rounding to the correct number of significant figures:

    <p>10.0 g + 1.03 g + 0.243 g = 11.3 g 19.556 °C – 19.552 °C = 0.004 °C 327.5 m × 4.52 m = 1,480 m² 199 + 0.001 = 1.2</p> Signup and view all the answers

    Which of the following represents the expression 0.00564458 rounded to four significant figures in scientific notation?

    <p>5.645 × 10^-3 (B)</p> Signup and view all the answers

    The result of evaluating 412.272 + 0.00031 – 1.00797 + 0.000024 + 12.8 should be rounded to 424.064364.

    <p>False (B)</p> Signup and view all the answers

    What is the calculated value of (71.359 m − 71.357 m) expressed to the correct number of significant figures?

    <p>0.002 m</p> Signup and view all the answers

    More Like This

    The Scientific Method in Chemistry
    16 questions

    The Scientific Method in Chemistry

    InestimablePentagon avatar
    InestimablePentagon
    Chemistry in Context Quiz
    39 questions

    Chemistry in Context Quiz

    PainlessSatellite avatar
    PainlessSatellite
    Chemistry Concepts and Scientific Method
    161 questions

    Chemistry Concepts and Scientific Method

    RegalSonnet avatar
    RegalSonnet
    Introduction to STEM and Chemistry Concepts
    16 questions

    Introduction to STEM and Chemistry Concepts

    ThumbsUpStatueOfLiberty avatar
    ThumbsUpStatueOfLiberty
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser