Science Fundamentals Quiz

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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

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 __________.

chemistry Signup and view all the answers

Match the following scientific terms with their definitions:

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 Signup and view all the answers

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

Laws can be expressed as mathematical equations. Signup and view all the answers

A hypothesis is a definitive conclusion based on experimental results.

False Signup and view all the answers

What is meant by the term 'matter'?

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

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

3 Signup and view all the answers

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

False Signup and view all the answers

How many significant figures does the number 413.97 have?

5 Signup and view all the answers

The measurement 156.00 g has _____ significant figures.

5 Signup and view all the answers

Match the following numbers with their number of significant figures:

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

Which of the following measurements has the most significant figures?

56.0707 ml Signup and view all the answers

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

True Signup and view all the answers

Write the number 2500 with 3 significant figures.

2.50 x 10³ Signup and view all the answers

What happens to coffee when sugar is added and dissolves?

The coffee, which used to be a pure compound, is no longer a pure compound. Signup and view all the answers

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

False Signup and view all the answers

What are the two key aspects of a measurement?

Accuracy and precision 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.

2 Signup and view all the answers

Match the following terms with their definitions:

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 Signup and view all the answers

How can measurement errors be minimized?

By taking a series of measurements and calculating the average Signup and view all the answers

All measurements are exact and have no uncertainties.

False Signup and view all the answers

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

2.000 g Signup and view all the answers

How many significant figures are in 19.0000?

5 Signup and view all the answers

How many significant figures are in 0.0005650850?

7 Signup and view all the answers

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

True Signup and view all the answers

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

1.22 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 ______.

90.4 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?

The smallest number Signup and view all the answers

Match the operation with its significant figures rule:

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 Signup and view all the answers

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

6.67 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?

11,254.30 g 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.

False Signup and view all the answers

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

8.76 × 10^-4 Signup and view all the answers

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

0.66 g/mL Signup and view all the answers

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

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 Signup and view all the answers

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

5.645 × 10^-3 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.

False 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?

0.002 m Signup and view all the answers

Science Fundamentals Quiz

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Questions and Answers

Which of the following best describes the scientific method?

A theory can be absolutely proven correct in science.

What is the difference between mass and weight?

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

Match the following scientific terms with their definitions:

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

A hypothesis is a definitive conclusion based on experimental results.

What is meant by the term 'matter'?

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

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

How many significant figures does the number 413.97 have?

The measurement 156.00 g has _____ significant figures.

Match the following numbers with their number of significant figures:

Which of the following measurements has the most significant figures?

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

Write the number 2500 with 3 significant figures.

What happens to coffee when sugar is added and dissolves?

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

What are the two key aspects of a measurement?

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

Match the following terms with their definitions:

How can measurement errors be minimized?

All measurements are exact and have no uncertainties.

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

How many significant figures are in 19.0000?

How many significant figures are in 0.0005650850?

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

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

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

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

Match the operation with its significant figures rule:

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

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

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

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

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

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

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

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

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

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